You are trying to win Red/Hard Mode while you are from Wave 50, a Final Wave. After defeating the Boss "Builders Club", it is saying "GODS, ANWSER US!" then this happens when the Music and the Cutscene plays, MR DOOMBRINGER appeared in a Cutscene and says: A visitor? Hmm... Indeed, I have slept long enough, and I must admit... I'm curious about your skills, Weapon. Come forth, Child of Man... AND DIE. The Cutscene ends. MR DOOMBRINGER is finally here. Defeat him or he will go in Rage Mode! MR DOOMBRINGER started using his first Ability and hitting the Towers with his Ban Hammer then says: BE GONE. Allowing him to move but the other Towers are unstunned and continues to shoot at him. Do something or he will enter the Base. Quickly! MR DOOMBRINGER's Health started at 666,666.