The Twins:

• Have a full set of hallow, or frost armor, and use a chain gun with clorophyte bullets, they seek their targets. 
• Wire up star, and heart statues on the bottom, and other pieces of the arena.
• Megashark, uzi, or chain gun, are different optionss for a long ranged weapon. also ichor or cursed bullets (900)
• Obsidian shield, and a set of leaf or higher wings to navigate the arena.
• Defeat Spaz first because te damage from the cursed inferno adds up quickly.
• Then kill retinazer... after spaz, a few lazers here and there are nor that hard to avoid.
• If all other attempts fail, use a nimbus rod to lower the spaz'es HP.