The Castle Is Ginormous | Wolfenstein 3D: Spear of Destiny - Part 4

[@Lunaholic94]

Woohoo you found it! Second and the last secret level of this game 🎉 it will be very very unique (and perhaps annoying at times) There is actually only one level without any secrets and it's the secret floor 10 of Episode 5 in the original Wolf 3d

[@g3ralt_the_SOLDIER]

I wouldn't have went back if you didn't mention it in another comment!