Crusader

An undead warrior who uses their bulletproof shield for offense and defense.

Strategy
The Crusader carries the shield in their left hand, so attacks to their exposed right arm still inflict damage. This requires some precision, however, so is best accomplished with the pistol, crossbow or thrown dagger.

The Crusader's windup for their melee attack exposes their entire body. Back away from them before retaliating. Using the axe is not recommended, as the Crusader will have already struck by the time your blow finally lands.