Has anyone ever attempted a self imposed challenge when playing a game?

[MasterVG71782]

RolStoppable said:

MasterVG71782 said:

I'm going to be attempting a 100% run in Okami soon, which people will probably know is a pain and can take a long time to get everything.

Can be done in less than 20 hours.

So you can collect all Stray Beads, feed all Animals, catch all types of fish, get all Brush techniques, buy all Dojo techniques and do everything else in 20 hours on a brand new game? That's my idea of a 100% game, and I don't believe it can be done in 20 hours.