As someone unfamiliar with this style of game, this was great. The floating rotisserie chickens are what really won me over, chasing the one zombie as well. The metal aesthetic is great, I think adding some guitar riff sound affects for like when you complete a mission will help unify the presentation. Doing missions is tons of fun but I would also love to see a main story later down the road, you seem to be a good writer and I think trying to do more in regard to world building is totally doable, want to see more characters who live in this world as well.