Good game. The art style is well put together and animated to create a nice setting. Your choice of audio fits the vibe of the game very well.
Some feedback:
- The game occasionally crashes for some reason. I've had this happen around the beginning and when I let a zombie pop out of its grave.
- When you slam on the floor, I feel like having a sound effect for that would be great.
- Difficulty should scale over time or new enemies should be introduced for continued gameplay interest.