Concept: pick 3 slop my beloved
Gameplay: the premise is really good and I really like the how the resurrect works, the gradually building set of abilities is also great. However the fun is kinda killed for me by how easy it is. I may have gotten lucky by getting vitality as my first ability, but I feel like enemies come way too scattered and way too slowly and my minions just don't die at all. For this reason I never really felt the impact of any upgrade or ability (other than vitality and reduced health decay). It's a shame because I really see how much potential is in the game, and I'm pretty sure tweaking a few numbers could fix it very easily. It's understandable though, the fact that the game has so much content with all the art and audio made by you as well is already a very impressive feat, I have no clue how you manage that (something to do with broken cars?).
Art: the spritework is simple but for first time with pixel art it's really good. I really like how detailed some animations are, those 160 frames do not disappoint. The visual effects and camera tweaks combined with well timed sound effects are also very good, as usual. The background though is a bit too simple I think, all that green gets a bit dull after a while.
Audio: banger music as always, I expected no less. Sound effects are all nice, give a lot to the game feel.
So yeah, amazing stuff as usual, much greatness with just some bit of balance issues. Nicely done!