Its just clicking, but its so fun! It feels so satisfying to destroy the demons, although my fingers (and my ears) hurts now haha. Since we can still modify the game after the submission, maybe you can turn the volume down a bit? I love the theme and how it's based on an actual story. Another suggestion is to maybe make an upgrade so you can hold down the mouse button instead of having to click? I had to stop playing because it hurt too much to keep clicking, even though I wanted to retry to see how far I could get. Good game!