[2021] The quests of Restore Power are absurdly difficult

Having done a few, I don't see the problem. Clear the building first, then activate the object- It doesn't spawn new zomibes, just attracts any sleepers nearby that have been spawned in but not aggroed/killed already. If you're sneaking in and activating the very loud generator before dealing with the zombies, well....you get pretty much what you got- A lot of zombies coming for your delightfully munchable flesh.