My problem exactly is hacking through large number of enemies which can barely wound my matchete wielding, windbreaker wearing, pacifist hacker is boring. The place is impregnable because i die by boredom.
This was the problem with the old necropolis too, where astonish number (thousands) of useless enemies bored the player to death. While the number of enemies here much lower, it still boring because they are still too many and they pose no threat, except when i suicidality running into a bunch of them.
Good stuffs to loot does not make the place good. It just make it a chore, because it is foolish to not rob the place. I think it would be better if there would much less zombie and more nether monster or even robots. Something which makes the place less chore but more dangerous.