Escape from Durnholde Keep

[Lissa]

After a few problematic runs, I've come across some things that may help you out to avoid problems with this buggy quest.
First of all, the waves are fast with no downtime. Fast CC is critical, don't bother trying to mark each wave.
Take note of your location every time you talk to Thrall. Each time you tell him to go is like a waypoint; if he dies, he'll respawn back at that location.

If Thrall bugs out and just stands around doing nothing, drag some guards from Tarren Mill and let them kill Thrall.

Do not fear inside the house at Tarren Mill. It causes 3 problems due to mobs running through the house walls:
1) Adds patrolling outside can be aggro'd
2) Thrall can get stuck in a wall, unable to be healed
3) Taretha can despawn

When the dragonkin waves come, makes sure the tank is standing out in front.
That's about it. Good luck.

During the final battle waves, AoE Fear is your friend. With a Warlock along and a Priest fear bombing, the fights become very easy.