I really think the AI is the only thing with the level of retarded luck to evolve from a ZM into a zombie prince. Day 4, I'm just chilling in my safehouse/grocery store, no weapons in hand. I felt safe, spraying scent killer as I went in and out so no zombies followed me. But I forgot about spraying myself one time when I left. A day previous, 2 ZMs with a biker gang's worth of zombies stormed my base and made me spend all my rifle and pistol ammo fighting them off. I had found a shotgun and more bullets for everything, along with some medical supplies and pills. Then I heard bashing. Naturally, I run to the back of the store and grab my shotgun and a couple boxes of ammo, thinking it would be just a stray shambler or two hat followed the trail.
Naturally, I was wrong. A zombie master bashed down the shelf and started shambling towards me. This didn't alarm me much, I would just wait at the door for more zombies to follow its trail then get a face full of buckshot. Then a zombie prince follows right behind it, likely moaning out the words "ding dong, motherfucker!" Cue me running to the back of the store, pushing shelves in the way then grabbing more boxes of shotgun shells. I wait for them to bash the shelf down and start unloading. I get cornered quickly, so I push some shelves in their way and then run through my shelf wall.
I run outside and get surrounded by shamblers and fresh zombies, dozens of them. I laid out Roguedjack's zombie, then ran for it. The map edge to the south of my base had a flaming car blocking one tile with a corpse and deactivated bear trap in the other. I activated the trap, dropped it, then blew away a shambler when he got stuck on it. Repeat this process until the zombie master comes up. I kite him to death as I shoot him, easy enough. Then the zombie prince comes, and I have no shells left. Cue Benny Hill run around my base before I spray scent killer and run back into the store and block the door. Now I'm at the present, still waiting for that zombie prince to come in and eat me, shotgun in hand + 10 shells, almost fully loaded rifle slung over my shoulder (no extra rounds) and a pistol in my waistband with 20 extra rounds.