It's a good game but i have some problems: the jump button should, in my opinion, be by default the space button instead of the W button. The slimes are too weak: it's difficult to be hit by them and i think they should change direction when they collide. The saws should also deal damage to slimes. I also think that a main menu and a settings menu (audio, visuals, screen size) should be nice. For me, the main character should be flip according to its velocity instead of the mouse position. Lighting the light is also unclear and you won't sear clearly if you turned on the light or not.
Don't forgot that it is only my opinion, not your. It's a really nice game and the theme is respected. Continue like that and congratulations!