I confess to being a bit overwhelmed by this event description, but here is what is super clear to me:
Neden is bringing back the Zombie Survival event. As in, kill the zombies, all the zombies, before they kill you. From the write up, it is clear a lot of thought has gone into this event. There are tokens, levels of "win", named characters, and (somehow) stories of a trial. This is all just wacky enough to be super fun.
Besides, how do you say no to Pizza Zombies?