Deceit is one of the seven Anti-Virtue Dungeons. The opposing virtue is Honesty. In the middle of the icy Dagger Isle, a narrow path is leading into the mountains. At the end of the path you will find the entrance to the Deceit Dungeon. The Shrine of Honesty, which is located at the southern tip of the mountains on Dagger Isle, is a welcome place to resurrect from the dead.
Inside the dungeon there are the ancient halls filled with all kinds of undead creatures. The four levels contain increasingly dangerous monsters, beginning with Skeletons, and Mummies. Further down you will come across Skeletal Knights, Liches, Lich Lords and Silver Serpents with their deadly poisonous bite.