Congrats on implementing all these game mechanics in only 3 hours! There are indeed a few game-breaking bugs remaining. Like the other players here, some of my runs ended prematurely because the door pushed me out-of-bounds. Other were just free because enemies didn't spawn in the last two rooms (at first I thought you were building tension and waiting for me to activate the computer before spawning enemies: maybe something to consider for the next part?).
However it still impressive to have reached such a playable state in such little time! Graphics are already good, I'd like to see the animation you have prepared. You have quite a strong basis to build on for the next two parts.