In the recent update, zombies now won't stand idle when it can't find a target, instead it wanders around until it finds one. This pretty much makes Vanaduke fight a must with Slag Guards now since those zombies can't be bumped and will get killed eventually before the final phase~ :P
Zombie Update
Unfortunately new/inexperience players will have quite sometime to learn it and will most probably won't be accepted in a run unless experienced or is a friend. Today I went with a few, they have no clue on how to kill it~ >.>
Nah, they can still lose track of you. It's just harder. You may have to ignore vanaduke for a bit and try to shake the zombies (with whatever method you prefer). In phase 5 we darn near protected that zombie from Vanaduke...
You'll have to have a dedicated zombie bumper if you want no Slag guards.
Having to deal with the zombies is now such a pain. This last run I did we just ended up killing it since it wouldn't stay at the top in Phase 5. Then I froze one of the guards and Vanaduke together with Shivermist while the other knight killed the other one. As a result was still quite easy. Requires Shivermist though to keep the second one still.
This is an image of 600 crowns, courtesy of the zombie update.
Now that they aggro properly, they don't get trapped. So... yeah.
It also means that people may return to using the slag guards as they were intended - a source of hearts for revival.