I'd like to recommend the 100% finishing of this game Requirements:

1. Beat the Game
2. Capture all Shadow Pokemon 3(optional) ) purify all shadow Pokemon

Yeah, already has been done by some people and there's a good route for it, and it's not 100%, it's All Snags. In theory, 100% would be every single thing in the game.

you should probably link your run instead golder, one day ill have to challenge your time

All snags purified or all catch pokemon?

I don't think anybody has run All Snags Purified, I know someone has run Purify Lugia recently, All catch pokemon I think has 1 or 2 runs. If more runs are done then we can add them if people ask. But those runners haven't said if they want a leaderboard.