It either has to be small scale like 'Clear IN stage 3 without dying/bombs' or 'Clear stage EoSD stage 5 pacifist' so people can do it daily.
Or big scale on a weekly basis, where challenges become a lot harder. I can guess people will have trouble clearing a certain stage above the PoC with only 1 day time, but a week would be fine.
I'm totally up for this. As right now I decide myself which game I play each day, but it would be cool to just browse the forum, read my asignment and start playing.