Enemies die with a few hits, even if your character is just starting out.
Enemies are at standard strength, but Level 100 characters will have an easy time.
Enemies are geared to Level 100 and maximum status play. Extra zombies spawn to attack you during boss fights.
Enemies are rigged to kill you with as few hits as possible. Like hard, extra zombies appear during boss fights.
Enemies only drop red experience orbs; Aya and Saki instantly enter Rampage Mode and cannot return to normal. Red experience orbs gain the ability to refill your characters' vitality while rampaging. Enemies otherwise similar to violent difficulty.