Eager to know more about Deathshead and his secret projects, the OSA sends Blazkowicz to the bombed-out city of Kugelstadt, where he is assisted by members of the German Kreisau Circle resistance group in breaking into a ruined factory and exfiltrating a defecting scientist. It is there he discovers the blueprints (and prototype) of the Reich's latest weapon, an electrically operated hand-held minigun dubbed the Venom Gun. Blazkowicz eventually breaks into Deathshead's underground research complex, the Secret Weapons Facility. There he encounters the horrific fruits of Deathshead's labors: creatures, malformed, and twisted through surgery and mechanical implants. The creatures escape from their containments and go on a rampage. Blazkowicz fights his way through the facility, only to see Deathshead escape the chaos by U-boat, and learns of his destination by interrogating a captured German officer.