
First of all, love that aesthetic. You definitely got the visual feel for this game down. Also liked the humour. Really set the B-movie-esque tone pretty well.
That said, the strategy of jumping on top of cars was a little too OP. I could've just sat on top of a car for the entire duration of the time limit and I guess I would've won. I think the easiest way to prevent this would've been to have some of the zombies have a projectile attack or something
As a result, the game was a little monotonous because of this. Maybe if there was another mechanic to incentivise killing the zombies ( outside of the score ) it would've worked a little better
Still, when I did really try to engage with the game, it got pretty tense when I had to search for ammo elsewhere, or try to get it from among the other zombies. It was also pretty tense seeing an army of them coming at me all once
While I think the zombies looked great, they really needed some sort of indicator to show how much health they had. Especially when it felt like later waves seemed to have more health. Maybe you could've had the enemies flash red, or maybe just add a red tint to them to show that they're close to death.
All in all though, I'd say that this was a pretty solid entry though. Good stuff here