I just did the third battle at level 5 with 6 pc's and 0 npc's. Boy it was touch especially when the giants broke free. I had a problem with the stinking cloud but the people affected were well to the south, and only got affected after the my rogue, who was affected straight off recovered enough to fight again. Thank pelor my cleric had extra turning to take out the undead wizzos or all would have been lost. A really good fight!