Obj maps in general are boring as FUCK and repetitive. Zombies get rekt on Vertigo due to damage multipliers, as well as most obj maps because a shit ton of them have damage multiplier. Obj maps are not fun. Literally the same exact experience EVERY TIME you play it. Humans almost always die at the same part of the map as usual (if they somehow manage to fuck up so badly that they lose, even with all the damage multipliers and point-saving intensification.)
I don't understand how you can find any obj map fun at all. Repetitive, boring, op humans, shit. And before you go off saying "hurrdurr you don't like it because you've been zombie on them" you don't know me. I've played every obj map so many times and it's always the same shit.