This was actually really fun to play! I love the idea!
It took me 2-3 play throughs to totally get what was going on but I got there eventually. I think the game could greatly benefit from a tutorial for sure!
The mechanics themselves were very engaging! I love the shields, the attacking, the ability to win on two fronts, either health or vibe lmao.
I see you said that the music and bacground are temporary but I honestly loved the classical music more than the other song that was playing! I always wanted to kind of be in a weak state just so I could listen to it. In the future being able to choose what your band plays would be nice! And for the background and other elements I think this game would greatly benefit from some animations of the characters!
I really hope to see this project take on more!