This is a run off of the Taming the Flames strat. Go there by yourself on a 7+ Wizard, it's in House K right north of the inn the quest starts at. Zone in on Elite.
You should bring a deathward robe.
Use these buffs - Fox Bear ExpRetreat MageArmor Shield Protection:Fire
1. Run in and just make your way to the mage at the end.
2. Make sure you train the entire cave onto you while you do it.
3. Run back a hallway and jump on that ledge with the lever on it.
4. Use Ice Storm on the mass of mobs.
5. Watch them all die to vuln damage, work the mage over yourself if you need to speed it up.
6. Loot the collectibles, I usually get 3.
7. Go turn in and get a reward.