~Hack~ Crystal Clear Progress

Hatch a Shiny Pokemon from an Egg. (Not Ditto)

Obtain your first gym badge.

Obtain your second gym badge.

Obtain your third gym badge.

Obtain your fourth gym badge.

Obtain your fifth gym badge.

Obtain your sixth gym badge.

Obtain your seventh gym badge.

Obtain your eighth gym badge.

Obtain your ninth gym badge.

Obtain your tenth gym badge.

Obtain your eleventh gym badge.

Obtain your twelfth gym badge

Obtain your thirteenth gym badge.

Obtain your fourteenth gym badge

Obtain your fifteenth gym badge

Obtain your sixteenth and final gym badge.

Rematch Falkner on Set 16.

Rematch Bugsy on Set 16.

Rematch Whitney on Set 16.

Rematch Morty on Set 16.

Rematch Chuck on Set 16.

Rematch Jasmine on Set 16.

Rematch Pryce on Set 16.

Rematch Clair on Set 16.

Rematch Brock on Set 16.

Rematch Misty on Set 16.

Rematch Lt. Surge on Set 16.

Rematch Erika on Set 16.

Rematch Sabrina on Set 16.

Rematch Janine on Set 16.

Rematch Blaine on Set 16.

Rematch Blue on Set 16.

Why doesn't every Pokemon game have this?

Change yourself. (After having started the game)

Defeat ??? in Slowpoke Well.

Defeat Youngster Joey after getting all 16 Badges.

Sit through ShockSlayer's optional intro speech. (It's a lot of text)

Find something under the truck. (Without having seen data before)

Walk through the border along Route 27 for the first time.

Obtain the Old Amber without asking for it.

Obtain the DV Viewer upgrade.

Catch all 251 Pokemon. Yes, all of them.

Defeat all Battle Sim trainers. (Don't leave building, use Center, or deposit_withdraw on PC)

Enter the Hall of Fame for the first time.

Enter the Hall of Fame again.

Get the Red Scale at the Lake of Rage with 3 or less badges.

Find a picture of the Pokemon so rare, it's not in the dex.

Have SS forge you a sword.

Find and defeat Yellow in her secret fishing spot.

Defeat ??? at Mt. Silver.

Teach a Pokemon in slot 1 Pay Day from the Gen 1 Move Tutor in Kanto.

Teach Surf to a Pikachu in slot 1.

Reach Round 7 in Voltorb Flip. (Goldenrod)

Win in the slots three times by betting one coin. (Don't leave machine) (Celadon)

Catch every variant of Unown.

Teach an Unown a second move.

Tune in to a very spooky signal at the Ruins of Alph.

Max out your Blue Card and get Buena's Number.

Hatch a Shiny Ditto from an Egg.

You've beaten the game entirely.

Catch Articuno, Zapdos, and Moltres.

Catch Raikou, Entei, and Suicune

Catch Mewtwo.

Catch Ho-Oh and Lugia.

Catch Mew and Celebi.

Catch Pigy. (missable info in comments)

Sit on a bench.

Defeat all Gyms (R16) and then E4 (Rematch) with one Pokemon. [1 session | no dying | music not disabled]

Catch Raikou

Catch Entei

Catch Lugia

Catch Celebi

Catch Articuno

Catch Zapdos

Steal the Egg from Prof. Elm's lab

Find a hidden entrance into Slowpoke Well

Present a shiny mascot for the Goldenrod Cafe's sign

Have lunch with Doom at the Goldenrod Cafe

Receive a bribe from the Arena Announcer in the Goldenrod Cafe

Permanently cut a special patch of grass in Route 34, then regrow it

Obtain the Rainbow Wing without defeating the Sages in Sprout Tower

Complete the puzzle in the northwestern chamber of the Ruins of Alph

Find a hidden passage into the Whirl Islands

Collect all decorations from the Mahogany Bazaar

Help the old man find his granddaughter on the SS Aqua

Ruin a Pikachu's day in Pewter City

Obtain the Oval Charm

Mess with the game program in Celadon Mansion

Find a hidden entrance into Cinnabar Tunnel

Cause some trouble for the guard in Cinnabar Lab

Get a drink from Chaos in New Cinnabar

Using the Dex Tracker, catch a chained Pokemon with perfect DVs. Sweet Scent recommended!

Have the Tradeback Guy help you evolve a Pokemon

Revive a Pokemon from a fossil

Gain access to Grizz's PC

Teach Splash to a Snorlax

Teach Barrier to a Dragonite

Obtain a Big Rock. It's the perfect decoration!

Obtain the Luster Ball

Clone a Pokemon using the Mirror Ball

Follow the Swinub in Blackthorn City and unlock the 57th pack design

Find a hidden Poke Doll and unlock the 59th pack design

Obtain the Poke Flute

Defeat The Champ

Find a hidden ledge near Mt. Moon

Investigate a mysterious capsule in Pokemon Mansion

Meditate with Eusine

Learn a secret from Cat at the Rooftop Sale, then obtain the treasure

Receive a generous gift of Rare Candies from Pigy

Restore the flow of time to Alph Forest

Defeat the Guardian

Empower the Unown Tablet

Recharge the Unown Tablet

Obtain the Applicator

Win 100 consecutive battles in the Arena

In one session, acquire all 7 residences outside of the starting ones

Defeat the last Team Rocket holdout

Defeat Char King Vogner

Defeat Blackbelt Mickdee

Defeat Boarder Colgate

Defeat Beautifulman Chaos

Defeat Honeybun in Olivine City

Defeat Chronicler Rowan

Disgrace the Wii and defeat Portablizer Shank

Catch all 251 Pokemon with 0 badges, then defeat Prof. Oak. This will not work in New Game+!

Defeat Burglar Frank for good and clear him out of the Goldenrod Underground

Unlock all music tracks from battling Fibbef

Unlock a music track from battling Savage Randy or Super Nerd Cosmo

Defeat PokeKid Muddy with 16 badges and no Pokemon over level 70 (at the start of the battle)

Defeat Ex-Rocket Zevach with 16 badges and no Pokemon over level 72 (at the start of the battle)

Defeat DJ Fef with 16 badges and no Pokemon over level 74 (at the start of the battle)

Defeat Diviner Rain with 16 badges and no Pokemon over level 77 (at the start of the battle)

Defeat Gold's Mom with no Pokemon over level 77 (at the start of the battle)

Defeat Red's Mom with no Pokemon over level 77 (at the start of the battle)

Defeat Cowboy Noak with 16 badges and no Pokemon over level 78 (at the start of the battle)

Defeat Acetrainer Tiko with 16 badges and no Pokemon over level 79 (at the start of the battle)

Defeat Adventurer Lena with 16 badges and no Pokemon over level 79 (at the start of the battle)

Defeat Engineer Kensworth with 16 badges and no Pokemon over level 80 (at the start of the battle)

Defeat Researcher Grizz with 16 badges and no Pokemon over level 81 (at the start of the battle)

Defeat Acetrainer Cat with 16 badges and no Pokemon over level 83 (at the start of the battle)

Defeat Nuzlocker SS with no Pokemon over level 90 (at the start of the battle)

Win a Mirror Match against Copycat

Complete all 14 in-game trades

Catch an Aerodactyl in Grullo Gorge

Catch a Porygon in Silph Co.

Catch a Togepi in Mt. Mortar Peaks

Catch a daily overworld Pokemon at Lake Tohjo

Catch the Kangaskhan in Viridian Forest

Catch the Starmie in Tohjo Falls

In one session, catch the 3 revitalized Pokemon in Alph Forest

Obtain Skulkraken and place it in slot 1 in your party

Catch Bort

Catch Bluebell

Catch Pikablu

Catch :B:

Catch Bronzory, Snout, or Snowdrop

Catch Crystalio

Catch Doug

Catch Koholint or Long at their first location

Catch Koholint or Long at their second location

Catch Snowcap

Catch Spectre

Catch Spruce Lee

Catch Weirdgrape

Catch XD001

Obtain an Egg from the Origin Plains

Earn your first badge in Nuzlocke Mode

Earn your second badge in Nuzlocke Mode

Earn your third badge in Nuzlocke Mode

Earn your fourth badge in Nuzlocke Mode

Earn your fifth badge in Nuzlocke Mode

Earn your sixth badge in Nuzlocke Mode

Earn your seventh badge in Nuzlocke Mode

Earn your eighth badge in Nuzlocke Mode

Earn your ninth badge in Nuzlocke Mode

Earn your tenth badge in Nuzlocke Mode

Earn your eleventh badge in Nuzlocke Mode

Earn your twelfth badge in Nuzlocke Mode

Earn your thirteenth badge in Nuzlocke Mode

Earn your fourteenth badge in Nuzlocke Mode

Earn your fifteenth badge in Nuzlocke Mode

Earn your sixteenth badge in Nuzlocke Mode

Defeat ??? in Mt. Silver in Nuzlocke Mode

Enter the Hall of Fame in Nuzlocke Mode

Earn the Kept Starter Trophy in Nuzlocke Mode

Earn the No Mistakes Trophy in Nuzlocke Mode

Earn the Hardest Options Trophy in Nuzlocke Mode

Earn the Underleveled Trophy in Nuzlocke Mode

Earn the No Legendaries Trophy in Nuzlocke Mode

Earn the Little Cup Only Trophy in Nuzlocke Mode

Defeat SS for the final time in Nuzlocke Mode

Obtain the Laptop

Catch a roaming Pigy in New Game+

Learn about Pokemon footprints from Tiko (not in Nuzlocke Mode)

Find a hidden entrance into the Dragon's Den