Solo or co-op?
If solo they congratulations. Hoe did you manage 2 of them at once?
Coop but only with one person. 3 people makes it too hard for the one on the platform. And don't stay on the platform. After. They do a stealth jump up that takes 1/2 health.keep them in front and not locked on. Maybe not the best advice but I finally ganked them.