How to complete Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2

The Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 is the sixth and final Campaign in the game, with the epic showdown between the Ultramarines and the forces of Chaos. In this interesting quest, players take on the role of Lieutenant Titus after he battles Imurah at the Astropathic Relay in the fifth Voidsong Campaign.

That said, here's how to complete the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

Everything you need to know to complete the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2

The sixth and final Campaign mission in Warhammer 40k: Space Marine 2 has several objectives. Here's a breakdown:

Converse with the Chaplain
Proceed to the Launch Bay
Board the Thunderhawk Gunship
Fight your Way to the Enemy Vessel
Clear the Passage
Advance to the Cathedral
Hold Until the Battle Barge Has Target Lock
Advance to the Mechanicus Facility
Investigate the Dig Site
Explore the Ruins
Hold until the Elevator Arrives
Descend Deeper into the Ruins
Advance to Aurora
Defeat the Helbrute
Get to the Surface
Seek Out the 2nd Company Position
Regroup with Acheran
Follow Acheran
Advance to the Second Force
Raise the Banner
Defend the Banner
Follow Calgar
Advance to the Obelisk
Defeat the Helbrute
Advance to the Obelisk
Find Lord Calgar
Defeat Imurah
Fight your Way to the Energy Stream

We have prepared a step-by-step guide to every objective and combat strategy to help you complete the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

Converse with the Chaplain

Your first objective in the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 is to meet and converse with the Chaplain. Head to the yellow assembly point and interact with the control unit to activate the elevator.

Follow the yellow marker to reach the Chaplain. Once you have reached there, the Chaplain talks about the incident with Imurah and warns the squad that he is watching them closely.

Also read: How to complete Voidsong Campaign Mission in Warhammer 40k: Space Marine 2

Proceed to the Launch Bay

After interacting with the Chaplain, head to the Launch Bay. Follow the yellow marker to the elevator, which will take you there. Once you have reached, interact with the control unit to activate the elevator which will take you down to the bay.

Once reached, follow the yellow marker to the assembly point. Then, continue following the marker to reach the Thunderhawk Gunship. Titus reaches the ship and briefs the men before they head out to Demerium.

Board the Thunderhawk Gunship

Navigate the debris and land safely to get to the next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 (Image via Focus Entertainment)

Your next objective is to board the Thunderhawk Gunship to get to the next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

Inside the ship, you see the mission objectives of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2:

Perform the Sub-Orbital Drop to Demerium's Surface
Stop the Activation of Project Aurora

Titus warns the group to stay close and be careful before they make the jump. Once you jump, your task is to navigate the debris and land safely. Make sure to avoid any incoming ships or wreckage as it will eliminate you.

Use the left and right controls to weave your way past to safety till you are suddenly transported by the Warp beacon. After a while, a cutscene depicts that you have finally landed at Demerium.

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Fight your Way to the Enemy Vessel

Once you have landed, your next objective in the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 is to fight your way forward to the Enemy Vessel in front. Clear out all the heretics and make sure they perish under the blade nourished by the Imperium. Use your Jump Pack's abilities judiciously and keep proceeding.

Beware that heretics are waiting to ambush you from the top. Make sure to eliminate them before proceeding with the ones below to clear your flank and deliver mercy. Keep proceeding until you reach the edge of a building with a large hole. Jump down that hole to proceed to the next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

You will find a host of ammo boxes and Medicae stims. It is recommended you replenish your drying stock before you proceed. Once done, head to the yellow marker and interact with the control unit to open the door. You will head into an active battleground beyond the door.

Eliminate all the heretics and clear out the area to proceed further with the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2. You will also find a sorcerer that you must eliminate to weaken the hordes and mow them down.

Clear the Passage

Once the heretics are eliminated, your next objective is to clear the passage and proceed with the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2. Follow the yellow marker and reach there to interact with the Chaos Altar and destroy it.

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Advance to the Cathedral

As your next objective, you must advance to the Cathedral. Use the floating blocks as a stepping stone and employ your Jump Packs to cross the void and proceed further. Keep advancing till you reach the wall with the statues of the priests on it. Use your Jump Pack to jump over it and reach the other side.

Employ the Jump Pack to cross the void and get down to the other side. Follow the yellow marker and interact with it to place the beacon with the targeting signal.

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Hold Until the Battle Barge Has Target Lock

Hold your ground until the Battle Barge Has Target Lock (Image via Focus Entertainment)

In the next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2, your objective is to hold your ground until the Battle Barge has a target lock on the beacon.

You will be ambushed by hordes of heretics whom you must defeat before you can proceed. Use your Jump Packs to activate the Ground Pound power and stun more powerful enemies and execute them. Keep eliminating all the opponents and hold your ground till the Barge has a concrete signal.

A cutscene ensues where the Sword of Atreus slices through the heretic power source and destroys it.

Advance to the Mechanicus Facility

The next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 entails advancing to the Mechanicus facility where the Aurora is held. Suddenly, a projection of Imurah appears in front of you and taunts you. Ignore the heretic and keep proceeding.

Keep following the path and walking up toward the facility. Eliminate all the heretics you find on your way and keep advancing. Jump down to the lower level and keep proceeding. Reach the Chaos Altar and interact with it to destroy it and open the cursed gate.

Eliminate all the heretics and the cultists and keep proceeding toward the camp. Once you reach the camp, use the ammo crates, caches, and weapons you find around you.

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Investigate the Dig Site

In the next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2, you must investigate the Dig Site. Head straight down to the Dig site and keep moving forward. Interact with the yellow marker to move the pipe that is blocking the way and clear a path forward.

You will be ambushed by more heretics. Eliminate all of them and make them taste the divine justice of the Imperium. Once defeated, keep moving forward and enter through the narrow tunnel with the heretic energy around it. Reach the bunker and follow the yellow marker to reach the end of the chamber. Interact with the control unit to begin decontamination and wait until it is finished.

Once the decontamination is over, proceed through the unlocked gate and head inside. Follow the lighted path to continue inside and progress with the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2. Jump down to the lower level and reach the next part.

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Explore the Ruins

The following part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 requires you to explore the ruins. Head to the yellow marker and interact with it to remove the debris and clear a way forward. Keep heading down till you find a stronghold of the heretics.

Eliminate all the heretics in the area and keep proceeding forward. Once the area is cleared, follow the yellow marker to remove the debris and clear a way forward. Advance to the next area where more heretics will spawn. Show them the power of Ultramar and do not stop until the heretics have been reduced to dust.

You will find a host of ammo boxes and Medicae stims. It is recommended you replenish your drying stock before you proceed. Immediately after, another wave of heretics will spawn. Defeat them and reach the next section of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

Keep advancing in the direction of the heretics and proceed by mowing through them. Walk straight toward the large entrance with the cursed energy around it. Jump down to the lower level and proceed forward. Eliminate all the heretics you find after crossing the passage. Once the traitors are defeated, interact with the yellow marker to destroy the Chaos Altar.

Walk toward the gate on the right and enter it to get to the next section of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2. You will encounter a phantom of Imurah but it does nothing but taunt you. Keep moving forward till you reach the large, circular hall.

Follow the yellow marker to the assembly point and wait for your squad to arrive. Interact with the control unit at the elevator to get to the next level of the mission.

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Hold until the Elevator Arrives

Hold your ground until the Elevator Arrives (Image via Focus Entertainment)

In this section of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2, you must hold your ground and wait till the Elevator arrives at your level. Eliminate all the heretics and traitors you see and defend your spot.

After a while, the elevator comes bearing gifts - more heretics for you to deal divine justice to. Eliminate all of them and clear the path for the next stage of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

Descend Deeper into the Ruins

Use the elevator to go down deeper into the ruins (Image via Focus Entertainment)

Once the heretics are defeated, follow the yellow marker to the assembly point and wait for your squad to arrive. Interact with the control unit at the elevator to get to the next level of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2. Head out of the elevator and proceed toward the large structure.

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Advance to Aurora

Your next objective is to move to the large Obelisk at the center - the Aurora. Eliminate all the heretics you find on your way and keep moving forward. Keep proceeding further and pushing past the hordes of heretics. Follow the long corridor and move to the next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

Make sure to eliminate all the heretics as you proceed further. Keep following the path downwards and advance towards Aurora. Enter through the cave, eliminate all the minions you come across, and clear the path to proceed. Head to the yellow marker and interact with it to remove the debris and clear a way forward.

Eliminate the oncoming horde of heretics and advance toward the Obelisk. Mow down all the minions and heretics and get to the central location. Keep heading to the upper location and walk toward the artifact.

Once you have reached the large, open area, follow the yellow marker to the assembly point and wait for your squad to arrive. Interact with the control unit at the elevator to get to the next level of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2. Interact with the yellow marker to remove the debris and clear a way forward.

You will notice that Aurora has immobilized the heretics. Use this opportunity to eliminate them and clear your path forward. A cutscene ensues where Titus interacts with Morias Leuze. Leuze refuses to shut down Aurora and insists on using the corrupted power. Immediately after, Imurah arrives and wreaks havoc on the area.

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Defeat the Helbrute

Your next objective is to defeat the Helbrute, perhaps one of the strongest enemies in Warhammer 40k: Space Marine 2. Keep attacking it and make sure to avoid its lunging attack as it deals massive damage.

Dodge all of its attacks and use a combination of rapid-firing weapons and high-damage weapons to deal continuous damage. You can also use Titus' Righteous Fury ability to deal more damage and sustain hits from the Helbrute till you finally defeat it, much to Imurah's dismay.

A cutscene ensues where Leuze activates the machine and a large, pulsing mass of energy builds up slowly and the artifact apparently eviscerates Imurah. While Leuze is busy gloating, Imurah corrupts the machine and takes control of Aurora, shooting a large shot at Leuze, eliminating him. Imurah takes hold of all the power and warns Titus that the end is near.

Get to the Surface

Make your way to the surface and proceed (Image via Focus Entertainment)

In the next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2, your objective is to get to the surface and lend assistance to the other. Head over to the yellow marker and interact with the control unit to unlock the door, which leads to the next level.

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Seek Out the 2nd Company Position

Your next task as part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 is to seek out the 2nd Company's position and regroup with them. Walk past the corrupted Cadians and proceed downwards and forward.

Reach the large door marked with an X and walk through it to reach the next level of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2. Drop down the hole and keep proceeding. Follow the yellow marker to the assembly point and wait for your squad to arrive.

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Regroup with Acheran

Interact with the yellow marker to activate the control unit and open the door to reach Captain Acheran. Head outside and eliminate all the heretics before you proceed to the next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

Interact with the yellow marker to remove the debris and clear a way forward. Jump down the path on the right, head to the lower levels, and proceed forward. Go left and head straight towards Captain Acheran's location.

You will be ambushed by a horde of heretics and minions. Eliminate all of them before you can proceed. Once done, head toward the Marines. They open the door for you to meet Acheran. Interact with Acheran to gather information and come up with a solution to stop the warp rift.

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Follow Acheran

Your next objective in the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 is to follow Acheran to the gateway. Walk past the praying soldiers and Marines and keep following Acheran.

He explains how the assault will take place and tells Titus to retrieve the company standard from a fallen team. You will find a host of ammo boxes, caches, and Medicae stims which you can use before you head out to the next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

Once done, head to the yellow marker and interact with the control unit to open the door. You will head into an active battleground where a Heldrake suddenly flies in. Eliminate all the heretics and keep pushing forward. Keep advancing and following Captain Acheran as he mows through the hordes of traitors.

Head to the yellow assembly point and interact with the control unit to open the door to the next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

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Advance to the Second Force

Proceed to the Second Force as part of the next objective in the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2. Head down the stairs to the lower levels and then head out toward the Second Force.

Head to the yellow assembly point and interact with the control unit to open the door. You will be ambushed by heretics and a sorcerer. Eliminate all of them and keep pushing forward.

Once defeated, head straight inside and advance past the tombs to the yellow assembly point and interact with the control unit to open the next door which leads to the following part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

Head out to the open area and join your fellow marines in the fight. Titus notices that the Marines Standard or flag is lying on the ground and he rallies the squad to revive it to raise the banner.

Raise the Banner

Your next objective in the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 is to raise the Banner. Interact with the yellow marker to hold the banner and proceed further.

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Defend the Banner

In the next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2, you must defend the banner and take down all the heretics and minions that have ambushed you.

Hold on to the banner and keep eliminating all the heretics with your one-handed weapon. A cutscene ensues where the marines can be seen mowing down the oncoming horde of heretics. As the marines are about to be overrun, Lord Calgar arrives and wipes out the remaining heretics.

The cutscene continues with an interaction with Lord Calgar where Gadriel proposes inverting the device to stop the Obelisk and end the tyranny of the heretics.

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Follow Calgar

Follow Lord Calgar in this part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 (Image via Focus Entertainment)

You must follow Lord Calgar in this part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2. Move forward with the rest of the Ultramarines and proceed to the forcefield.

A cutscene ensues where Gadriel interrupts Titus and flips the device. Immediately, the device shoots a green beam that weakens the Daemon. The Ultramarines head forward to interact with the rest of the devices to close the infernal gates.

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Advance to the Obelisk

Your next objective is to advance to the Obelisk. You will be spawned in a room filled with ammo and Medicae. It is recommended that you stock up before you head out.

Head to the yellow assembly point and interact with the control unit to open the door. Keep moving forward and eliminating all the heretics you come across. You will find yourself going toward the last Obelisk. Since the bridge is broken, you must find an alternate route to get to the location. Follow the route to your left and interact with the yellow marker to clear the path.

Follow the yellow assembly point and interact with the Chaos Altar to destroy it and open the locked gateway. Proceed further inside and keep moving forward. Eliminate all the heretics you find in front of you and clear the way. While defeating the heretics, you are suddenly ambushed by a Helbrute.

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Defeat the Helbrute

The next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 requires you to defeat the Helbrute. Keep attacking the Helbrute and defeat it like the one you defeated midway through this mission. Make sure to avoid its attacks as it deals devastating damage.

Once you defeat the Helbrute, Decimus informs you that he has inverted the second Obelisk and further weakened the Daemon.

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Advance to the Obelisk

You must advance to the Obelisk to continue the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2. Follow the yellow assembly point and interact with the Chaos Altar to destroy it and open the locked gateway. Proceed further inside and keep moving forward.

You will be met with a Dreadnought eliminating a Helbrute. Titus invites him to join the fight and proceed further. Lead the Dreadnought to the carnage and let him unleash the full force of the Imperium upon the heretics. Keep eliminating heretics and proceeding toward the Obelisk.

Follow the yellow marker and get there. Once you reach it, a cutscene ensues where Chairon steps up and inverts the miniature of the Obelisk. The third beam hits the gate and the daemon is further weakened. Lord Calgar requests Titus and his squad to aid him in taking down the heretics.

A cutscene depicts an epic battle between the Marines and the heretics. Imurah is seen casting a spell and opening a rift to escape. Lord Calgar fights against the rift and proceeds forward. Titus and the squad follow behind Calgar and enter through the rift.

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Find Lord Calgar

Once you have reached beyond the rift, your next objective in the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 is to look for Lord Calgar. Keep proceeding forward and search for the Chapter Master.

As you proceed, you will come across weapons and ammo. It is recommended that you stock up before you proceed any further. Advance once ready until a cutscene begins where the squad faces Imurah. Lord Calgar is stuck in a mist and under the thrall of Imurah.

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Defeat Imurah

Keep attacking Imurah and defeat him to get to the next part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 (Image via Focus Entertainment)

Your next objective in the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 is to defeat the heretic Imurah. Imurah is one of the most powerful villains in the game and you have to be tactful when you fight him.

Make sure to avoid his special attacks at any cost as they deal devastating damage. Make use of ranged attacks and lob grenades at him to weaken him. You will be incapacitated frequently but you will recover and you must keep damaging him in the dark to progress with the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

Once the large beast arrives, make sure to target its eyes as it's the most effective way of dealing massive damage to Imurah. Once you damage him enough, you are cast into an illusion and must break free of it. After a while, you come across Lord Calgar and he asks you to recollect a specific phrase to prove yourself. You must now seek out Imurah and end him.

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Fight your Way to the Energy Stream

Defeat Imurah and reach the end of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2 (Image via Focus Entertainment)

In this penultimate part of the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2, you must fight your way to the Energy Stream you see in front. Head toward Imurah and keep dealing damage to him. Assist Lord Calgar and your squad in taking down Imurah and advancing toward the artifact.

A cutscene ensues where Titus is seen resisting Imurah's power and proceeding towards the artifact. Titus finally gains control of the artifact, reverses its power to damage Imurah, and finally eviscerates him.

Titus is next seen lying on the ground. Lord Calgar comes to him and asks him to rise, stating that his duty is not yet done. Titus rises and all the marines cheer, concluding the Dawn’s Descent Campaign Mission in Warhammer 40k: Space Marine 2.

In the following cutscene, Titus is bestowed with the Laurels of Victory and Lord Calgar recruits him as part of his company for a new mission. Titus bids his squad of Chairon and Gadriel adieu and interacts with Captain Acheran before he boards the ship.

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Edited by Ritoban "Veloxi" Paul