The Brim

Everybody knows that imps like to live on the edge.

Thus, our brave little lesser demon finds itself literally at the brim of hell, where it must survive as long as it possibly can. For points (hell creatures are notorious for being totally into arcade-style gameplay) and possibly the admiration of harpies.

Basically just jump from platform to platform, try to stay away from the edges, avoid the spiked platforms and buzzsawballs, and that's it! The longer you stay alive the higher your score.