Defeat your rival in Oak's Lab.

Win the optional battle against your rival on route 22.

Defeat your rival in Cerulean City.

Defeat your rival on the S.S. Anne.

Defeat your rival in Lavender Town.

Defeat your rival in Saffron City.

Defeat your rival on your way to the League.

Stop Team Rocket in Celadon City.

Stop Team Rocket in Saffron City.

Earn the Boulder Badge.

Earn the Cascade Badge.

Earn the Thunder Badge.

Earn the Rainbow Badge.

Earn the Soul Badge.

Earn the Marsh Badge.

Earn the Volcano Badge.

Earn the Earth Badge.

Defeat Lorelei of the Elite Four.

Defeat Bruno of the Elite Four.

Defeat Agatha of the Elite Four.

Defeat Lance of the Elite Four.

Become the League Champion.

Return stronger and defeat Lorelei of the Elite Four.

Return stronger and defeat Bruno of the Elite Four.

Return stronger and defeat Agatha of the Elite Four.

Return stronger and defeat Lance of the Elite Four.

Return stronger and become the League Champion.

Catch Chansey.

Catch Moltres.

Catch Zapdos.

Catch Articuno.

Catch Mewtwo.

Catch Raikou, Entei or Suicune.

Catch all 171 obtainable Pokemon.

Rescue Lostelle on Island 3.

Help Lorelei in stopping Team Rocket on Island 4.

Rescue Selphy on Island 5.

Stop Team Rocket in their warehouse on Island 5.

Complete the Single battle challenge.

Complete the Double battle challenge.

Complete the Knockout battle challenge.

Complete the Mixed battle challenge.