Here is the full list of all 20 E-Girl RoomMate achievements.
Unlock LittleCat
Unlock GhosyCat
Unlock E-Goy Cat
Unlock E-Girl Cat
Unlock CloudyCat
Unlock StellarCat
Unlock NotACat
Unlock Demonic Cat
Unlock AbyssalCat
Unlock NyakuCat
Unlock first clothed scene
Unlock second clothed scene
Unlock third clothed scene
Unlock fourth clothed scene
Unlock first naked scene
Unlock second naked scene
Unlock third naked scene
Unlock fourth naked scene
Unlock last scene in the Game
Open social link in option