In Chapter Seven of Marvel's Guardians of the Galaxy, players will have access to a number of different locations that lead to Guardian Collectibles and Outfits.
Siding with Nikki instead of Ko-Rel in Chapter Two will benefit players in this chapter. Opening the doors in Chapter Seven, ultimately depends on Nikki's passkey that should've been obtained at the end of Chapter Two.
If players do not have Nikki's passkey, they must reactivate the Power Core. Reach the circular chamber and crouch below the blue pipe and keep going down until entering the massive room with the Power Core. If players do have Nikki's passkey, they can simply walk up to the doors and interact with them to get it open.
For more guides and secrets in Marvel's Guardians of the Galaxy, check out How to get Rocket’s Five Horseman of the Apocalypse Outfit in Marvel’s Guardians of the Galaxy, and stay tuned to Pro Game Guides for continued coverage on all of your favorite games!