Passing through the Advanced Research Complex, Doomguy learns of a Hell artifact named the Crucible. Requiring another Argent Accumulator to return to Hell, Doomguy explores the Lazarus Labs and comes across an escaped Cyberdemon; rebuilt and revived with Argent energy, he defeats the Cyberdemon and tears an Accumulator from its chest, transporting them both to Hell where he finishes the Cyberdemon.