Brian made the 10 new levels, which appear in Episode 1. The remaining maps all come from Wolfbel 1.
Zeitz was responsible for culling the graphics, all of which were borrowed from other mods. The SS guard from the Spear Mission Packs (Lost Episodes) replaces the mutant, and the officer has been replaced by the chain gun-wielding blue guard from Ultimate Wolfenstein.
Brian also made rudimentary coding changes for the mod, including ceiling colors and increased health and ammo.