Here are my guide for Black Temple solo run, as Rogue.
Best spec to use: Combat.
Gear that I used: Full Griveous PVP set (at least), no PVE items.
Rotation: Pop cooldowns, get 5 combos, “Slice and Dice”, “Marked for Death” for 5 combo > “Recuperate”, “Killing Spree”. Repeat.
You should have some “Master Healing” potions at you.
Black Temple bosses solo run guide Rogue
High Warlord Naj’entus.
Easy fight, just do the rotation mentioned.
Supremus.
Easy fight, just do the rotation mentioned.
Shade of Akama.
Clear the room of mobs.
Talk to Akama to start the boss fight
Once you are able to nuke the boss, take him down fast.
Teron Gorefiend.
Easy fight, just do the rotation mentioned.
Gurtogg Bloodboil.
Easy fight, just do the rotation mentioned.
This boss has a lot of HP, it might take more time to take him down.
Essence of Suffering.
This boss has 3 phases (3 faces you need to kill).
Kill the first face without using your burst (killing spree and trinkets).
Use the burst on the second face.
That is where you get a lot of damage.
Keep “Recuperate” up and burst.
The third face is really easy.
Mother Shahraz.
Easy fight, just do the rotation mentioned.
The Illidari Council.
Not an easy fight.
Start by nuking the priest.
After 6-7 seconds, nuke the paladin and kite him.
The other mobs will cast some AOE that you need to avoid (blizzard, fire etc).
All four mobs are sharing the same HP so you just need to nuke one, the paladin.
If you are about to die, use “Vanish” to reset the fight, and try again.
Illidan Stormrage.
Nuke Illidan without using your burst.
When the two golems appear, use burst to take them down fast.
They do a lot of damage.
If you manage to kill them, the fight is pretty much done.
Keep “Recuperate” up and you will outheal Illidan in the third phase (after the golems are dead).
Items to get?
Gurtogg Bloodboil drops a very nice dagger.
Also Illidan drops the demon hunter headband, a nice dagger and the two legendary swords (glaives).
If you have questions, ask in the comments.