Really nice game! Great pixel art, I really like the animations, The shooting is awesome and the movements are good. You should make a webgl version for next time :D The only bad things:
- I did not see where we are told to open the door with "F"
- I thought I had to kill all the enemies for real, that is super hard
- Health should be increased or enemies should deal less damage, because the difficulty is really hard. Not too much, but maybe a little bit.
- Also, I found a place where you can exit the map: