The Unicorns are a unique type of enemy. They were added in late April 2010 and were classified as incomplete. During their incomplete version, they could not attack and could not be harmed. Later, they were completed and they were able to fight, but only if the player attacked them first. The unicorn's attack is very powerful and can kill you if you take as little as 1-4 hits from them. The quest given to you by the Darkblood Spy will offer you a Darkblood Skull Axe in return for ten unicorn horns. This is so far one of the hardest quests in the game.