User blog comment:Krinklezz/The Twins Glitch/@comment-50.76.202.18-20111223031117

-Create a long skybridge -put your nurse on one end with a spawn point -summon the twins -run to the other end of your bridge and use your mirror and warp back to the spawn point -when you reappear, heal yourself and start running back to where you left the twins -if you did it right, the twins will start running back to catch you, but one of them is faster than the other (?) and i guess outruns the other, detaching the cord between them, and the one that shoots lazers will have disappeared (if your bridge is too long, the battle will end as your gone too far away from the boss, and if your bridge is too short, the one eye wont be able to outrun the other when you get to it after warping--it may take some trial and error) -if the eye separates and you've got the length of your bridge right, repeat the steps above until hes dead. Note that when you run to him after he has separated, he will most likely spew his green crap, then charge at you a few times. At this point you'll have to jump over him and continue to the other side of the bridge, teleport, then repeat.

Im not sure on the specifics behind why this works, but this is how i've farmed this boss. Once you beat him the first time, you can make a harp with his soul of sight and basically own the destroyer. Hope this helps.