User blog comment:Fierysquirrel/The Twins Help/@comment-209.34.114.234-20111215184701/@comment-166.248.67.12-20111215211216

I think the Twins are the hardest as well. They are faster than Skeletron Prime and can even catch you from time to time when using the Gravitation/Featherfall Strategy. They also do a lot more damage than Skeletron Prime. If you build a proper arena Destroyer is laughably easy.