Nightmare achievements

You have become a Master Sniper

You defeated the Venus Flytrap. Now people wandering into the cave won't get hurt.

You defeated Dracula, a powerful enemy of Odium.

You defeated the Stone Golem disturbing the miners in Regal Hills Mine. The miners should be able to continue mining now.

You defeated the werewolf Skar who escaped Ancient Prison.

You defeated the Poltergeist in the Umbra Mines.

You have become a Master Monk

The Black Lagoon is the homeland of most Vampire kind. After Dracula fell in battle by your hand, there has been a power struggle between his two sons Alucard and Vladimir. With your help, Alucard was able to take power of the Vampires.

You have become a Master Berserker

You have become a Master Spellblade

You have become a Master Arcanist

You defeated the Necromancer that was raising the dead at the Holy Grounds. This should help with the zombie problem.