you crawling through the vent and after you have came out you see a big monster,he look friendly,grin all the time

And he is "Uneasy alliance"

Sebastian: we've met before,but not in person...A-hem...my name is Sebastian Solance,the shopkeeper and documents collecter in this underwater base aka Hadal blacksite.here's the drill : you give me those documents or accests,and i'll give you an item to survive this place.

And then he look at you with smrik