Played a two player game of this scenario yesterday using 4 heroes and lost the first encounter. OL used ettins as his open group and kept throwing tomble, might 1, back toward the entrance,incidentally he has the best scramble ability, awareness 5. I eventually got caught in the canyon beginning and stalled tremendously on the fire pit due to two ettins. Avric and Leoric finally made it out. I kept Syndrael, might 4, the highest might I had at 4, smashing boulders to stall for Tomble to get clear.
OL gets to place enemies on the entrance, so without having the tumble skill for my thief, Tomble was trapped behind the master ettim who kept throwing him, eventually the OL had two boulders left to put on the map, Syndrael got knocked down. 1boulder left. Syndrael chose not to stand up, tomble got knocked down, chose not to stand up. OL won the first encounter.
I get a free stand up action during encounters, heal some. OL goes first, loved his ettins so chose them again. Missed some crucial hits. Avric heals everyone with his feat, we bust out and eventually won the second encounter.
So technically lost the first but won overall. It was a bad decision to use ettin the second time I think, a group with more minions would have clogged things a bit more, extending the second encounter.
BTW encounter 1 took about 2 hours, yeah we really put a lot of thought into it!