Shooting the zombies felt good. Even though they never got close enough to present a threat, they honestly just felt like a fun collectible to get while moving through the minigames, and that seems like what you guys were going for. Other than the last minigame which was a bit confusing, the other minigames were quite fun and the time pressure for the whack-a-zombie felt appropriate (As someone who is bad at whack-a-mole lol).
My only challenge with the art was that I was looking forward to navigating a carnival themed environment, and the world itself gave more of a rural trailer park wasteland. I still really liked the isometric art perspective especially because I'm a sucker for the fallout 1 look!