It takes some getting used to, but overall was really fun once you get in a groove. Maybe starting the player in one of the narrow hallways would be better to get players thinking in a side scrolling manner before moving into a more open area. It's cool to walk around and find new areas and maps.
I did find it a bit hard to aim at the correct enemies when navigating the bigger areas when stuck in corners or using the Z axis to move. This is extra frustrating because all the best weapons require tucking yourself into those corners or through narrow choke points that require you to use 80% of that ammo/durability just to escape. So yes you had a strong weapon, but it was so short lived. Another thing is melee weapons feel pretty bad to use. They take 2-3 hits and are very slow making them almost useless outside the machete . Last gripe is it would be great to be able to hold food like in Dead Rising. Because you lock players from backtracking too much, it's hard to get back to enough food to say alive, especially since most food gives so little health.