If you haven't managed to finish the Trial of the Crusader 10man Achievements yet, they're a lot easier than I thought they would be.
The only one I didn't manage to do myself was The Traitor King... and even then, I managed to last through 2 submerges before succumbing to the stacking DoT. If I were more careful about kiting, I probably could have done it (I recruited some guildies to help out instead!).
Upper Back Pain was easy, since the snobolds just jump off Gormok's back and stayed on the floor until the end; all you have to do is avoid the fires for the rest of the fight. I managed to kill Acidmaw and Dreadscale within 10 seconds of each other as well.
360 Pain Spike is all about timing - you don't need to leave the Mistresses up for ages, just time your kill just as a second Mistress emerges from the portal.
I already had Salt and Pepper, but the one thing that surprised me the most was how easy Resilience Will Fix It is.
Even with both the druid and the priest healer, I didn't have too much trouble - just equip a PvP trinket, drop traps, send your pet in and blow your cooldowns at the start... and by the time the mobs get through your snakes and you're out of interrupts (Scatter, Silence, Intimidation or Wyvern do well here), you will probably have both healers down. Killing the rest of them takes less than a minute if you have decent DPS.
I also found it helpful to run a timer (which you can pull out of the in-game clock and place anywhere on your screen like I've done in the screenshot below) to keep track of time so that you can wipe it if you're having trouble.
And to think my PvE-oriented guild had so much trouble with that fight! :P