In addition... about 30seconds before the fight, someone in the arena (a blood DK) was fighting Disruptron, whose lasers killed me WHILE I WAS OUTSIDE THE ARENA (be careful!). Luckily, a guy ressed me. The second I got ressed, though, I got warped into the arena. No buffs. I also wasn't flasked. I had 50% HP. All I had going for me was deadly poison and leeching poison hadn't fallen off. I sat down and began eating food, and the bosses spawned (I'm still at around 55% HP) and started running towards me. I did not get an opener because of this!
Key tactics or tips:
-Obviously you want to stay on Bo and bomb him with the other guy's rocket projectlies.
-Pick up Dirty Tricks. Gouge every few/every other Death Ray to minimize his damage. YOU CAN NOT OUTHEAL IT. PREVENT IT! Kidney shot when possible! You can also blind one if !@#$ hits the fan! Cloak immuning works, but I am unsure about the normal missing component (It hits for physical damage -- rockets hit for fire and can be immuned as well as missed! -- but since it can't be evasion'ed I assume cloak works against it). My primary use for cloak was sitting on top of the boss to ensure maximum rocket strikes.
-If combat, like me, make a cancelaura macro for Killing Spree, or don't bother using it at all!
-When the barriers go up, QUICKLY RUN INSIDE AND BANDAGE (rather than killing the barriers)! The timing I noticed was that I could tank 3 rockets ("Immune"'d) while bandaging before the next one hit, so be ready to move quickly!
-Use recuperate. This is NOT a DPS race AT ALL, the barrages do the VAST MAJORITY of the damage! My Skada for the fight says I only did a TOTAL of 3.17M damage, out of 12+M hp. DO NOT UNDERESTIMATE HOW MUCH THEY WILL DO. This is 100% a fight for survival.
-I broke ZERO immunity shields. In one case, I actually stayed inside of the immunity shell while Bo walked outside to meet me (when I was running to it), so I safely DPSed him from inside! Don't bother DPSing them. They die naturally in about 10 seconds (and have about 500k life, meaning it'd take like 10s to kill anyway). This is a good time to bandage, and I am pretty sure shiv'ing a leeching poison into an immune guy will still heal you, though someone else might want to clarify. Even if it didn't, you could shiv the barrier projector.
-Smoke bomb doesn't work to interrupt the Death Ray. Don't bother with it. From what I can tell, combat readiness and evasion are both useless - opt for Nerve Strike, even if it is only minorly useful occasionally.
DON'T OVERCOMPLICATE IT! My original strategies involved focus blinds and focus gouges and all kinds of %^-* like that. It isn't worth it! Just keep it simple. Obey the mechanics and do your best to prevent yourself from taking damage and it's an easy fight!
Good luck fellow Rogues!