Alright I was raging the entire time while playing it, let me uncloud my mind before I start trashtalking the game...
ok long enough. The game was actually really fun and creative. The level designs are really cool, but there are a few blind jumps which I don't like. I don't really like the implementation of the theme because the killing humans bit feels kinda forced. you can easily beat the game without killing anyone, but the game forces us to. I really like the splatoon-esque poison shooting mechanic tho.
Also when I first started playing I played with arrow keys and pressing up to jump, but apparently that hasn't been coded in because I couldn't perform wall jumps with up arrow so I was stuck on the first jump for a while until I switched to spacebar.