Two manned the entire thing - a certain spell is spamming way too much. We went through 80 charges of CLW, 13 charges of summons, 50 charges of MM.
The sheer number is astounding - I get its meant to reflect something, but in total over the two areas, it's 400+ orcs, every 20 there is a shaman, not to mention 2-3 champions with axes w/ sneak attack.
Loot in all chests wasn't working either, pretty big bummer.
One of the doors to lock pick was a much higher DC than the area gives off and the door at the end was plot locked, so couldn't even stomp a big bad.
Respawn rate is insane as well, we cleared it entirely, and as we were running back, monsters started respawning in the dungeon on top of us, and outside the dungeon was fully respawned.