man, i totally SUCK at any fps, and for this reason i may not owned in this game at all, but since it's not fast paced, i managed to finish it(i passed on a door and the game ended, it's expected, right?), and i liked it!
i have nothing to complain about your game, only say that i liked everything on it, it deserves a nice doom-like music and a boss, maybe more enemies varieties too, but i know about the risk of scope creeping a gamejam, you did a nice work, pretty solid submission!