Obtain the bicycle

Obtain the hidden starter in Celadon City

Steal your first Pokemon

Defeat Blue on Nugget Bridge

Ensure the longevity of the Fighting Dojo by beating Mr. Psychic

Defeat the captain of the S.S. Anne

Defeat Mr. Fuji atop Pokemon Tower

Obtain the rank of Admin

Beat the Super Nerd to obtain one of the fossils at the Pewter Museum

Beat up the police officer for Pewter City's Nurse Joy

Defeat Daisy Oak in Pallet Town

Defeat Blaine at the Pokemon Mansion

Defeat Bill at Silph Co.

Get promoted to Executive

Defeat Lance

Defeat Red in Mt. Moon

Get promoted to Rocket Boss

Defeat all of Kanto's gym leaders

Defeat Julien and free the Bottoms

Return Miss Hoenn to her "father figure"

Perform a succesful heist on the Viridian City Store

Find a second nurse for the Pewter City Pokemon Centre

Obtain the secrets of the Fishing Guru's

Convince Bill and obtain the Cell Phone

Catch Mew

Catch Mewtwo

Defeat Mewtwo for the first time

Reach Victory Road without defeating all Gym Leaders

Beat the Copycat Girl

Deliver the box of HM's and obtain the Trainer Card

Defeat Red & Oak

Defeat Red & Oak using only a Raticate (Missingno in slot 2 allowed)

Get the minimum sentence at the courtroom

Finish the game with a Bounty over $850.000