Decent concept, bad execution
I think you need to go back and rework some of the coding for this game. I dealt with the first three levels before I got tired of dying due to the game, rather than my playing. The story seemed OK for the length that I played, but I couldn't help but feel like I had played this exact sort of storyline a hundred times before.
The hitboxes for some enemies are too small, while the character's is too big, and the stun immunity is almost nonexistent. In the forest, whenever 2 wolves and a bat came at you, you had to pray that you would only lose half of your life, rather than all of it. Sometimes a zombie would spawn inside me while I was taking out other zombies, and it would kill me before I could react at all.