1) Quest journal entry doesn't go away on completion
2) Acid puddles seem to get destroyed by acid explosions
3) The enemies are penguins. You're making fun of me.
4) Appears to be a High loot/gold, Low XP quest. With a group of 4, 2 6's, 2 7's, Experience total was under 200. Gold payout did not cover cost of supplies used in healing and elemental protection.
5) Boss monster spawned twice. I wasn't -too- upset, considering instead of 12 XP for monster kills throughout the quest, I instead got 24.
6) It seems there were supposed to be several chests at the end of the QA. Unfortunately we didn't get to them. Our scout reported that there appeared to be tons of traps that we couldn't get past.
I don't know what that really means, so maybe Denethen/Gruff can clarify.
On the good side, it was certainly an interesting and fairly short quest :) A little easy and a little difficult at the same time. My main gripe was the cost of the whole thing.