The pixelated shader makes it feel very eerie! I've been stuck in a loop in Level 88 -> -1 -> -2 -> 88 -> -1 -> -2 -> 88 so I'm not sure what to proceed from here. Unless that's the point of this game.
EDIT: Now that I understand the assignment, I've managed to complete the game - https://imgur.com/ON07QPM ! But it's still pretty tough because at some it seemed like there's no anomaly and I went through the "opposite" elevator and I got sent back to Floor 88. Really took me a few tries and double checking. Great stuff. Also kinda funny when doing floor -2 there was some flooding so I immediately go to the elevator next to the office.