I'm currently working on a challenge called "The Endurance Test", an extremely brutal challenge not for the faint of heart. It has 7 levels.

(I've actually completed building the level but I've been playtesting it for about 4 hours now trying to beat it lol)

haha! Sounds pretty hard!

xD

UPDATE: The challenge is finally out: https://steamcommunity.com/sharedfiles/filedetails/?id=920064843&searchtext=the+endurance

Feels like my level, took me 2 days to complete (and another 2 to run thru to publish it), Here it is if you wanna try it Steam Workshop :: Hard Parkour obstacle course