I don't have a completely optimised mitigation rotation and I don't know when to use Superbolide/Invuln out side of pinch situations so I would appreciate any advise on general mitigation optimisation or more specifically on Gunbreaker.

Currently on the first w2w I use Reprisal + Nebula (2min cd) then Camouflage after Nebula falls off, along with Corundum and Aurora when health hits half.
On the second w2w I use Reprisal + Bastion then Arm's Length in place of Camouflage.

I am thinking about replacing the Nebula with a Bastion so I can use both Nebula and Bastion on the second w2w but I could be completely wrong about this.

I thank you for any input provided.