Runs smoothly and the backstory looks nice. My problem is that I couldn't wrap my head around what our goal was, or what the control were. I understood they were zombies and even got my hands on a crowbar, but after taking 5 minutes trying to figure out how to equip it I just tried moving in the street and got 2-shot by the zombies. On the bright side, the painting's nice.
In the end, I think that players could have gotten much more out of your game if their goal was a bit more clear and the controls were written on the itch.io page (or even the controls window, which you can toggle on in the Player settings in Unity).
PS: The item randomisation was on point!