My only advice would be to make the character animations for slicing more realistic, and allow the character significantly more forward movement in a combo. Also the zombies have too much health, and dodging should be button+direction, not two separate button if you want to align with other games in this genre. Overall, cool game! I love the atmosphere and antagonist(?) narration. Reminds me a lot of sundered, but more spooky in a good way.