Warlocks are the only character able to put down a rift and snap freeze you....or throw two objects at you and do the same thing. How is this still a thing. Titans can't do it unless in their super and hunters can only freeze with the pick axe. You can't defend against that. There is nothing to do, I could see if you got slowed but to get out right frozen I'd asinine.
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I actually like to play a Behemoth who specializes in freezing through cryothesia and diamond lance. After one side arm kill, you get the freeze burst so you freeze, melee, pick up lance, and then freeze again. I also use fragment where you get super energy for defeating frozen targets, mod where melee kills grant super energy, and synthoceps so that I'm never too far from a frozen target to one punch them 🙂