Dagger Peak, much like the Valley of Fire before, is a path always leading upwards. Unlike the straightforward paths of the Valley, though, Dagger Peak consists of a multitude of winding trails that meander upwards, most of which intersect at some point; judicious path-finding will save on Keys. Reaching the the top of the Peak will bring the heroes to the Cliffs of Desolation.
This area will require some rigorous backtracking to ensure that everything is obtained. Heroes will once again encounter a Gargoyle in tight quarters; the Phoenix Familiar found earlier on the Peak will be great help here. Dagger Peak can be tough on a hero's health and key collection.