The Bedlam infiltrators only had Doppelganger devices with them. They were trapped in pitch-black halls with blocked exits. Their only way out is to go back against armies of bloodthirsty Mazoku and Yakuza, armed with defensive shields and spears, able to pierce them cleanly from a distance using their night vision. They tried to fight back and call for backup, but no one would be able to come to their aid in time. In their last desperate attempts to fight back, some rushed forward to the Mazoku shields and detonated the explosive molars embedded in their gums.
But all this was futile, as none of them could reach even a meter close to the flanks. The Mazoku would push forward, stepping on the dead Bedlam Mercenaries, and Yakuza would follow behind, finishing off any of them who still showed signs of life and preventing them from detonating their molars.