I appreciated this scenario. I played it as an introduction to Cairn for 5 "expert" players and we used pregens from the author's pregen list. 

I found this scenario a good introduction to forest-crawl and to the exploration procedure. We rushed in a single session one-shot, but I think it requires at least two sessions to be fully enjoyed. 

At the end of the game, we found the monster; I think it is too tricky to fight him directly but we figured it out no other ways to stop him and so we fought.