Thanks Wayward! I appreciate your feedback, and I think that it would be very reasonable for the GM to give the PCs some advance knowledge of the crafty nature of their quarry.
Also a good point on the turns. You are correct that my vision for the frostbite mechanics would be a check on something like a dungeon turn, as opposed to a frostbite check every round during a combat session that lasts five rounds (otherwise the PCs could freeze to death before the combat was over). I struggled a little bit with how best to convey that. I think that once the jam and voting have concluded, I will refine the language to indicate the frostbite check should be every ten minutes.
The ingenious salvation of the party from the orcs sounds very cool, I'm glad the player got such a killer sword as their reward! Sounds well-earned. :D
Best,
Dennis