I like to think with my Ice/Cold Corruptor that my debuffs make a 30 second window to make any enemy easy to solo. I've soloed everything outside of Hamidon and Incarnate trials with my main. Benumb will get you as much -regen for 30 seconds that you need in order to inflict a ton of damage and make it stick. Infridg has so much proc potential, I like to throw a -res proc and two Acc IOs for good measure since it recharges so fast already. Sleet recharges quick too, so I just use it for its debuffs and stack it with Ice Storm and Blizzard to help even more with damage comparative to -regen. When I am fighting an AV or GM, I drop Snow Storm toggle on them, throw Infrig, then Benumb, then Sleet, then Heat Loss. Then I pop Aim, and drop Freeze Ray, my epic hold (Char), Bitter Ice Blast, and the Bitter Freeze Ray before the +acc, +dmg buff from Aim expires (10 seconds). I repeat the attack cycle three times, then repeat the debuff cycle after 30 seconds. Heat loss comes back in around 2 minutes.