I'm surprised no one commented yet, but I got some ideas with Fleeces. -Any% or 100% but with only ever using one of the Fleeces (so 12 different types of runs, 2 for each fleece). Player must rush to get the chosen fleece ASAP, and finish the game. -Golden Fleece %, basically get to a certain bonus % of damage in separate difficulties. Like 500%, 1000%, people can argue about that.