It was neat. It's pretty balanced, but I think you should cap the number of enemies that appear at once, or cap the number of bullets enemies fire because it can become too overwhelming and make it impossible to play. The music and sound is great, but it's on mute by default? I didn't notice this while playing, but does shooting a specific colour demon refill that same colour bar?

Also the interactive tutorial is really neat.

I don't think the info made it clear, but the spells the player has solve most of those problems.

Shield - allows you to take take 2 hits with no effect to health | Circle/Bomb - clears bullets around the player in a large area

Heart - heals physical health | Up Arrow/Speed - gain speed

Slow - slows the game allowing the player to take more time to dodge | Snipe - shoots the nearest enemy