Really grows on you just before it ends.

The good:
+Fun and addictive gameplay loop
+Hilarious death animations
+Atmosphere was engrossing
+Somehow, this feels unique but intuitively familiar
+I quite like the sprite work
+Combat is satisfying

Neutral:
/Music was all really catchy, except for that god awfully repetitive and obnoxious track on the first level

The bad:
-I didn't realize how much jumping has spoiled me
-Shotgun is terrible, it breaks progression by being weaker than the starting pistol
-Feedback is rather weak; taking hits only seems to decrease health and doesn't give any other indication, sounds for the guns were very putsy, lack of bob feels a bit lackluster at times, and lack of enemy reaction and hardly noticeable blood spray makes it hard to tell if a shot landed
-Ending feels very abrupt