Thanks for the feedback, I'm glad you (mostly) liked it :p I wish I could have added some progression system but I sort of ran out of time and didn't want it to be half-baked, so I put the mask collection in but it's just for fun.
About the controls, you're totally right I should have added WASD + something for attack + dash (I think spacebar for dash maybe but w/e). Maybe I underestimated the importance of providing that, I thought most people were comfy with either arrow keys or WASD but maybe not. I guess I learned something, it's good feedback, thanks.