[@superservo27]
Honestly, Viper was super easy for me to take care of. I really started using Scorch my first time through, and so I just kept up real consistent hits on him, stayed in cover. Excellent burst damage, with minimal time exposed to his more steady/consistent damage. No, my hardest Titan to kill was the Ion at the very end- I forget what her name was, but she kept appearing right behind me with her Core and nearly brrting me to death with it.