On all skill levels a Wrath don't spawn on R1M6: Temple of Pain.
The episode's final boss is the Overlord. The episode's style can be described as a mixture of Medieval and Runic, yet the numerous new textures give the episode a style of its own. It can be considered optional because the introductory level offers a direct slipgate to Episode 2, allowing players to skip Episode 1 (though this is not recommended). Hell's Fortress is the first episode of Dissolution of Eternity.