Nice job on the sprites and animations! The game looks very polished from a visual perspective. The game was quite difficult for me (I played on medium difficulty). I didn't feel like I had any time to do anything other than use the scythe to kill monsters since it seemed like they spawned at such a quick rate.
I feel like the shovel action animation could perhaps be shortened? It looks like it's a single animation that repeats once, but only the first cycle of the animation is enough to kill the tentacle. I also noticed that I could walk out of bounds into the black area during the tutorial.