POKEMON XD: GALE OF DARKNESS TIPS & TRICKS
Easy purification
To get your Pokemon purified easily, keep the Pokemon with you for at least ten minutes, then put them in the purification chamber. They will purify about 25% faster than normal.
Classic battle
At the Outpost stand, talk to the man with the pink hair. As you leave the stand he will challenge you to a battle. Accept and you will battle Rider Willie, the first trainer from Pokemon Coliseum. Also, the background music will be that from the Pokemon Coliseum battle. You can challenge him whenever you want.
Super easy snaging
When the shadow pokemon is in the ball. rotate your control stick about 90% of the time you will snag the pokemon.
Mt. Battle Master Pokemon
The Mt. Battle Master Battlus has the following good Pokemon:
Dusclops (level 70 to 76)
Slaking (level 70 to 76)
Latoios (level 70 to 76)
Latias (level 70 to 76
Salamence (level 70 to 76)
Metagross (level 70 to 76)
Purify Shadow Lugia
Get all nine sets on best circle. See Multiple ways for the Purification Chamber to help this out.