User blog comment:Koggeh/The Koggeh Challenge/@comment-4691107-20111220020504/@comment-4691107-20111220021936

Also, does the "Defeat every boss listed above except Wall Of Flesh at the same time." mean, create a new world with everything from the previous one, and when you go to fight Skeletron, summon the rest of the bosses? Because that'd be insane!