The concept is very original and very great
Sound is nice
The art looks a bit cheap
The UX is good
The idea for the level selection is genius
The different mechanics are nice, but it feels kind of repetitive after a point, probably because killing the enemies is slow (because of the main mechanic), and even if you encounter new mechanics, since the fights are so frequent, it still makes it feel long
I think it would be nice to have coins attacted to you, or being collected automatically at the end of the level (can be frustrative otherwise)
I think the zoom is a good idea in concept, and the idea of using it with the labyrinth is good, but in practice, it doesn't seem to work well