I love the artstyle and the concept.
The only complaint is that the controls felt a bit off, Like sometimes they just got dropped midway? (maybe issue from my side) But the collision size for the zombies def did not help, Id constantly miss them while trying to be quick
Thought I accept its a skill issue xD but the collision size can be bigger
Other than that, the sound effects are quite fitting and not annoying at all, so good job on that one :D