Grimm Quest for the Gatherer's Key is a Hack and Slash Fantasy game with some platforming elements that leans heavily on extremely bloody and satisfying gameplay. Players can explore a huge world that often offers several different routes that lead to accomplishment. Almost every part of it is customizable to taste, not only the graphical aspects but also it's gameplay aspects.
Here are some more shots of hub 2.
Showing off the vertical gameplay, wallwalking on the upper levels then backtracking downstairs on the lower levels.