I really liked the fact you put a lot of different characters, and variation in ennemies ! I played Monkey, Pete, Connor and Emirichu, and they all where fun in their own way.
I think it would have been great to add some platforms above the ground to add some verticality, and make it more strategic to dodge the cinnamoroll.
I also think the dodge mechanic was a bit unclear, and makes it a bit too random if you do take damage or not. If the goal was to make the damage a bit more gradual (assuming that was your goal, like in holocure since you mentionned it) I think it would have worked better to just put many hearts, the game would have been maybe harder but more consistent difficulty-wise. And then the upgrade would have just added hearts. Nonetheless I appreciate the fact you tried something different.
Overall had fun, and the different characters and ennemies were very cool to discover.
PS : Also just wanted to mention for anyone playing, you need to mouse click to buy upgrades, made me think for a bit since the rest of the menu was controlled with keyboard only.