Not sure if this is the real map and you made some re-work, however the idea of giving all of the zombies too much damage power and my hero and my team has 1/4 of damage and has little hp this ends up us getting killed quickly.
We aren't given items or units for support or any spell can can wipe out a zombie, instead just run like hell or die quickly by attacking just one of them.
Terrain is a mess the idea of trees as some sort of maze is not the good option, and the overall map is filled with nothing but zombies, this idea is nice but not enough force to be an upload or approval worthy.