... They give the keys to you themselves ...
... All characters can't do that ...
... I think your relationship with said girls affects that or how many tips you've decided to visit her in her room ...
... They give the keys to you themselves ...
... All characters can't do that ...
... I think your relationship with said girls affects that or how many tips you've decided to visit her in her room ...
Never mind, I found a way to get all keys at once, at night, add Kitty to the party, go to Xavier office, she will be able to open you the door, then you can cheek the place and get a keychain (seems like it works even of you don't have Xavier's key)
But it seems you can get the keys for everyone except Squirrel Girl and Psylocke with that method, the first one I had already acquired previously and the second one I had to get after the night heist with Kitty.