Great game! It felt great to play and I always felt like getting hit was my fault. I only have two bits of criticism. The first is that "0.9 fire rate" means nothing without context. All the other upgrades gave percentages, and I wish that did too, like "10% shot delay reduction" or something like that. As I'm typing this I realized it might be a 0.9 multiplier, but I didn't realize that at all in game. The second super minor problem is that your health doesn't animate in sync, and while that's probably something no one else would care about, it's kinda distracting to me. Still, fantastic job overall!