Swamp Shamblers are zombies, which are ,of course, the undead. Swamp Shamblers might be weak in attack and low on level, but when you attack them, it seems like you can NEVER kill them, not with your bare hands at least.........

Swamp Shambler
Level: 20 Money: 0 Gold 1-2 Silver 1-99 Copper
General loot

Belief Cloak of Water

Quest loot

Mysterious Spore

Material loot

Pet loot:
Location(s): Swamp of Wyrms

You have to use the Foul Bane Potion to kill the monster.