User blog comment:Orion76/Terraria Ideas: World's End Mode/@comment-176.92.37.62-20120212194534/@comment-4860845-20120220205110

Hallow mode is like Professional mode. If ya beat Hallow mode, it goes onto IMPOSSIBLE mode. As the name insists, It is impossible, and the regular zombie does 500 damage to you. If you do manage to beat impossible mode, You might as well call yourself a hacker. Are these technics a good idea?