Your game is really good! I like the artwork and the sound effects all blend together really well. The game seems to me like a mix of classic DOOM and Minecraft(without the crafting part). Some problems with the dungeon I had was:
-The enemies sometimes spawned directly in front of me or directly at my side, making me take damage.
-The constant sacrifice of hp combined with the limited amount of hp potions obtainable in a run makes the game a bit too difficult, I think it would've been interesting to have some kind of random hp drops from enemies. That way the incentive to kill enemies is higher and not only to unlock the doors.
-The first person perspective and the somewhat small enemies that constantly go towards you makes combat a little bit frustrating, enemies that attack you from a distance could've been an interesting challenge (but I realize that would require a bit more work).
Aside from that I really enjoyed the polish here, you managed to get a lot done in time for the deadline!
Good work!