True but maybr this will help for the new guys or lower levels. What is your strategy while fighting Valus?

Maybe*

i just move from one end to the other and snipe him down. primary or heavy is equipped w whatever burn, and Black Hammer. by his 2nd or 3rd pass towards the entrance, he can be stopped on the main floor and he doesnt move. usually he is at 30% or less health. finish him from my secret spot. only a secret if i know.

I must admit I've been soloing nightfalls fr a while now but I found this one tricky once all the mobs start to flood in... Was getting on not too badly but the psions were a real pain, got them done x3 on Tuesday but it was one of the trickier nightfalls in recent times