Tried out the linux build: the game is not executable, I had to chmod +x it myself. To be fair this happens with a lot of linux programs. Also the windows/super key didn't work except when paused, which was weird. Seems to work well otherwise.
I think there was some kind of jitter on enemies when moving fast close to them, might have to do with me using a 165 hz screen and possibly their movement going at 60 hz or something.
I wish there was some bigger effect when I hit enemies, the bloody spot is pretty small and hard to see from a distance.
Level design looked good,