Not bad.

I kind of agree with @MikaelStudios in terms of additional polishing.

Interesting Idea

Not a big fan of the mixed art style (pixel, realistic and cartoony)
There was awesome art individually but the mix did do it justice

For the gameplay; 
Not necessarily fun, but it was functional
Needed a lot of polish

Also didnt see the connection to the theme

Good game

In my opinion, you did great job, and your game is pretty nice but what you forgot is to make an option of healing. The other things are good, especially anime girl)) 

The game is certainly challenging and difficult too. A trade off of blows is great touch, but needed a chance to recover health somehow after a skirmish with the zombies. 

I felt the environment was nicely done and with a little bit of polish and improvements, we could get a fun game in our hands particularly for platformer lovers like myself.