Herian 2

Herian 2 is a Heretic- and Hexen-themed 32-level megawad for Doom II by Ian Wilson released in 1999, which was named one of the Top 100 WADs of All Time by Doomworld.

Levels
Secret levels:
 * MAP01: A Familiar Place
 * MAP02: Search for Supplies
 * MAP03: Hunt for the Lost Castle
 * MAP04: Return to Town
 * MAP05: Lava Cave
 * MAP06: An Old Friend in Trouble
 * MAP07: Strange Place
 * MAP08: He shouldn't be Here
 * MAP09: Escape to the Isles
 * MAP10: Things are getting worse
 * MAP11: Mixing Plant
 * MAP12: Nightmare in Main Street
 * MAP13: Cottage in the Hill
 * MAP14: Bon Accord Centre
 * MAP15: Trapped in an Asylum
 * MAP16: Lava Pit (exit to secret level MAP31)
 * MAP17: Arena
 * MAP18: Harbour Area
 * MAP19: Country Garden
 * MAP20: Journey to Herian City
 * MAP21: Herian City
 * MAP22: A visit to the Water Mill
 * MAP23: Hot House
 * MAP24: Road Works
 * MAP25: Ship Shape
 * MAP26: Fantastic
 * MAP27: Bridges
 * MAP28: Mysterious Tower
 * MAP29: Cavern
 * MAP30: Final Showdown
 * MAP31: Return to Island City (exit to super secret level MAP32)
 * MAP32: Secret Mission

Built-in demos
This WAD features three built-in demos. All require Doom II with ZDoom v1.17 to view them. The demo levels are: