It was overall pretty well built. There were no bugs with the gameplay part but chaining the zombies was too easy on the last level that it started to get boring when I had to do so for 3 minutes. Maybe adding some environment elements to improve complexity in gameplay would make level three more interesting.

That last battle was insanely fun and did a really good job at making the player like they were getting swarmed by a hoard of zombies. It did get a little overwhelming, but finding a strategy to run and shoot was rewarding. The first two levels did feel a little aimless and it was difficult to figure out where to go. Even with the cars to guide you, I wouldn't have known that the yellow was leading me in a specific direction unless told otherwise. The animations also could be a little buggy, such as the zombies sometimes spinning when they walk or the shadows of the player being disconnected. I really think leaning the game more towards the third area as a whole would be really beneficial, because that's the highlight of it! 

I think this game is pretty alright and the animations and visuals for this look good too but there are some flaws. First, the gun is SO loud everytime it fires. Next, it gives you vague instructions and doesn't really tell you where to go and when you explore the map, you can find areas that can result to you falling into the void. The third level is fine but it would be better if there was a way to tell how much time you had until 3 minutes was up. I think this game is good but these areas just need some polishing and it would go from good to solid.