Chapter 2 Season 7 of Fortnite is finally here, and it will take players on for an intergalactic experience.Each new season unfolds with a plethora of new POIs, weapons, characters, skins, cosmetics and adds a twist to the main story. Along with that comes hope for interesting weekly and legendary challenges.As usual, completing these challenges will require a tad bit of effort but will help players upgrade their Battle Pass and earn unique rewards.Also read: Fortnite Chapter 2 Season 7 trailer: Superman, Rick and Morty, The Foundation, and the Alien InvasionThis time around, the Battle Pass has undergone a change and has brought back Battle Stars, which players can use to unlock BP rewards.They came without warning, their intentions were unclear. But what’s clear now is that a war has come to the Island.Fight back the Aliens in #FortniteInvasion pic.twitter.com/KTQsS9UXjn— Fortnite (@FortniteGame) June 8, 2021As for Season 7, aliens have been introduced, along with a Rick and Morty crossover. These aliens, for sure, will cause an uproar on the Fortnite island. But the weekly challenges will perhaps help the players take them down and reward them for doing so.Catalog Entry #407-740When placed onto the face this strange plastic device seemed to make us appear as unrecognizable.More testing required.Full data upload - 6.8.2021 pic.twitter.com/KXGykzgO7S— Fortnite (@FortniteGame) June 6, 2021This week, there are over 400,000 XP up for grabs, and the only way to bag them is by completing Week 1 challenges in Fortnite.Also read: Fortnite Season 7: Where to find all Alien Artifacts and unlock Kymera's Custom styleComplete list Epic challenges in Fortnite Season 7Collect different weapon types (0/5) - 30,000 XPSearch chests at Steamy Stacks or Craggy Cliffs - (0/7) - 30,000 XPDeal damage with the Pulse Rifle (0/500) - 30,000 XPElimination with the Rail Gun (0/1) - 30,000 XPUpgrade Weapons at upgrade benches (0/3) - 30,000 XPAccept a quest from a payphone (0/1) - 30,000 XPUpgrade weapons at an upgrade bench (0/3) - 30,000 XPBuy a shield potion from a Mending Machine (0/1) - 30,000 XPComplete list of Legendary questsConverse with Sunny, Abstrakt, Dreamflower, Riot or Bushranger (0/3) - 45,000 XPCollect Stone From The Aftermath (0/100) - 30,000 XPCollect 10 different IO tech weapons (0/3) - 30,000 XPInteract with Bunker Jonesy's conspiracy board (0/1) - 30,000 XPPlace rubber ducks in Retail Row, Pleasant Park, and Believer Beach (0/3) - 30,000 XPBattle Stars and changes to Battle Pass in Fortnite Season 7Season 7 will bring back Battle Stars that will allow players to grab items from the Battle Pass.These can be earned by completing challenges and in-game activities that eventually level up. Each level grants players five extra Battle Stars to utilize.Completing specific challenges will earn players 10 Battle Stars, which will be an immediate level up. Secret Battle Stars will also be scattered all over Fortnite Island for players to discover.This essentially means that even players who don't have access to the Battle Pass will be able to earn rewards just by playing the game and completing challenges, which is pretty neat!Also read: Every map change in Fortnite Season 7 - Corny Complex, Believer Beach, new POIs, and purple landmarks