Well,
I'll adress 2 things in this review.
1. GLITCHES
It is filled with glitches. If you are in the air when you enter a cutscene, you can move freely during the cutscene. If you get hit in midair by the eagle spit, you can still double jump and choose the direction you wish to fall. If you die while jumping, you stay in midair and fall over dead. I died on the second stage with the eagle, and when I chose ressurect, it did restart me, but the eagle spit still came down on me but there was no eagle. I'm sure there are more, but try to fix some of those.
2. Gameplay
It was alright gameplay wise, I liked how it indicated your health and clearly let you know when you got hit. But the zombies take too many bullets. Either lower their health, or make them slower. Also, it would make it harder if you didn't have unlimited ammo. And is there a headshot damage multiplier? It seemed like they took 6 or 7 shots with the pistol no matter where I hit to die.