I was hooked by the artstyle ; but there is a lack of balance between the number of enemies and the number of shots required to eliminate one. My game ended up being me dodging a big pile of stacked mobs while shooting at them for no real reason and rushing to find the diamonds. I'd love to see more of it if you keep developing this project with at least more levels and a more balanced combat mechanic though. It was a good idea to add a tutorial in the level itself. Good job overall :)