The main thing that caught me was that the bullets have a slightly screwy hitbox I could be partially in one and not take damage. Dash does need a more pronounced cooldown especially in later battles, maybe make the sound louder? I feel it's better to have to choose whether to save or use the dash and the cooldown isn't so terrible that it completely matters. In later levels though like when you have to dash to avoid and boss 3 also is more spam dash think later.
okay I was at 48 kills and went to go get a drink of water and when I came back there was 500, I know I wasn't gone for more than 2 minutes, so how does that happen