I enjoyed this game quite a lot! Even though there is "little polish" there is quite a bit of fun. Sure, the enemy path finding was simple and they got stuck (which I abused), but that is easily fixed with navmesh movement. Crisp sound and great movement feel. Also, nice touch with the exploding "barrels" spread around the level. They will come in handy on harder levels.
I found the reloading aspect of the game a bit frustrating at first without some feedback since I didnt know how much ammo i had left, but I quickly learned to deal with it.
I was also spawned inside the spikes at one point which was funny :D haha
Overall though, I really enjoyed the game. Great job!