Defeat Falkner on hardcore mode

Defeat Brock on hardcore mode

Defeat Bugsy on hardcore mode

Defeat Misty on hardcore mode

Defeat Whitney on hardcore mode

Defeat Lt. Surge on hardcore mode

Defeat Morty on hardcore mode

Defeat Erika on hardcore mode

Defeat Chuck on hardcore mode

Defeat Sabrina on hardcore mode

Defeat Koga on hardcore mode

Defeat Pryce on hardcore mode

Defeat Jasmine on hardcore mode

Defeat Blaine on hardcore mode

Defeat Clair on hardcore mode

Defeat your rival in Pallet Town (Randomized mode is blocked for every achievement except for the randomized achievements, good luck!)

Defeat your rival on Route 22

Defeat Brendan in Viridian Forest

Defeat Falkner

Defeat Brock

Defeat Archer in Mt. Moon

Defeat your rival in Cerulean City

Defeat Bugsy

Defeat Misty

Defeat Brendan in the SS. Anne

Defeat Whitney

Defeat Lt. Surge

Defeat Morty

Defeat Erika

Defeat Chuck

Defeat Clair

Defeat Giovanni in Rocket Hideout

Defeat Sabrina

Defeat Soupercell before the Elite Four

Defeat Boss Giovanni in Silph Co

Become the League Champion

Become the League Champion on hardcore mode

Defeat your rival on Route 22 before the Elite Four

Defeat Koga

Defeat Brendan near the Safari Zone

Defeat Pryce

Defeat Jasmine

Defeat May in Cinnabar Island

Defeat Blaine

Defeat Giovanni in Cerulean Cave

Defeat Brock in a rematch

Defeat Misty in a rematch

Defeat Lt. Surge in a rematch

Defeat Erika in a rematch

Collect all of the HMs

Collect all of the non-buyable TMs

Purchase a shiny Magikarp

Defeat the friendly teacher in the Trainers School

Defeat the Pokemon Move Maniac in Cerulean City

Defeat Gentleman Komodo in the day care

Defeat Ace Trainer Cole in Route 8

Defeat Dumb*ss Mudkip Kid in Saffron City

Defeat the beauties in the Celadon City Hotel

Defeat Ace Trainer Haley in Route 15

Defeat Cerulean Cave Black Belt Ketchup in Cerulean Cave

Defeat Cerulean Cave Black Belt Ketchup in a rematch in Cerulean Cave

Defeat Power Plant Dumb*ss Jojo

Defeat Professor Oak in his lab

Defeat Clair in a rematch

Defeat Misty in a rematch for the 2nd time

Defeat Falkner in a rematch

Defeat Dumb*ss Mudkip Kid in a rematch

Defeat Pryce in a rematch

Defeat Morty in a rematch

Defeat Dumb*ss fan Jojo in a rematch

Defeat Red in Kindle Road

Defeat Bugsy on a rematch

Defeat Whitney on a rematch

Defeat Joyful Game Corner Ace Trainer Andrew

Defeat Cape Brink Channeler Racher

Defeat Falkner on default or harder mode and randomized species mode

Defeat Brock on default or harder mode and randomized species mode

Defeat Bugsy on default or harder mode and randomized species mode

Defeat Misty on default or harder mode and randomized species mode

Defeat Lt. Surge on default or harder mode and randomized species mode

Defeat Erika on default or harder mode and randomized species mode

Defeat Morty on default or harder mode and randomized species mode

Defeat Chuck on default or harder mode and randomized species mode

Defeat Koga on default or harder mode and randomized species mode

Defeat Sabrina on default or harder mode and randomized species mode

Defeat Jasmine on default or harder mode and randomized species mode

Defeat Blaine on default or harder mode and randomized species mode

Defeat Pryce on default or harder mode and randomized species mode

Defeat Clair on default or harder mode and randomized species mode

Become League Champ on default or harder mode and randomized species mode

Beat Fuchsia City's Tamer Pokemon cry challenge

Defeat the Elite 4 and Champion in a single session on default mode or higher

Defeat Whitney on default or harder mode and randomized species mode

Obtain all overworld items in the cities of Kanto

Obtain all overworld items and defeat all trainers in Viridian Forest

Obtain all overworld items and defeat all trainers in Mt. Moon

Obtain all overworld items and defeat all trainers in Route 3 and Route 4

Obtain all overworld items and defeat all trainers in Route 24 and Route 25

Obtain all overworld items and defeat all trainers in Route 5, Route 6 and Route 11

Obtain all overworld items and defeat all trainers in S.S. Anne

Obtain all overworld items and defeat all trainers in Route 2, Route 9, Route 10 and Diglett's Cave

Obtain all overworld items and defeat all trainers in Rock Tunnel

Obtain all overworld items and defeat all trainers in Route 7 and Route 8

Obtain all overworld items and defeat all trainers in Rocket Hideout

Obtain all overworld items and defeat all trainers in Pokemon Tower

Obtain all overworld items and defeat all trainers in Silph Co.

Obtain all overworld items and defeat all trainers in Route 12, Route 13, Route 14 and Route 15

Obtain all overworld items and defeat all trainers in Route 16, Route 17 and Route 18

Obtain all overworld items in the Safari Zone

Obtain all overworld items in Seafoam Islands

Obtain all overworld items and defeat all trainers in Pokemon Mansion

Obtain all overworld items and defeat all trainers in Route 19, Route 20, Route 21 and Route 22

Obtain all overworld items and defeat all trainers in Cerulean Cave

Obtain all overworld items and defeat all trainers in Power Plant

Obtain all overworld items and defeat all trainers in Route 23

Obtain all overworld items and defeat all trainers in Victory Road

Obtain all overworld items and defeat all trainers in One Island

Obtain all overworld items in Two Island

Obtain all overworld items and defeat all trainers in Three Island

Catch Articuno, Zapdos and Moltres

Catch Mewtwo and Mew

Catch Raikou, Entei, and Suicune

Catch Celebi, Necrozma and Calyrex

Catch Regirock, Regice, Registeel and Regigigas

Catch Latias, Latios and Kyogre

Catch Jirachi, Meloetta, Genesect and Zygarde

Catch Uxie, Mesprit and Azelf

Catch Cresselia, Victini and Volcanion

Catch Manaphy, Kyurem, Keldeo, Tapu Fini and Glastrier

Catch Shaymin, Virizion, Tapu Bulu and Zarude

Catch Terrakion, Magearna, Iron Leaves, Iron Boulder and Iron Crown

Catch Tornadus, Thundurus and Landorus

Catch Diancie and Pecharunt

Catch Hoopa, Tapu Lele, Regidrago and Spectrier

Catch Tapu Koko, Zeraora and Regieleki

Catch Cosmog, Cosmoem, Solgaleo and Lunala

Catch Nihilego, Buzzwole, Pheromosa, Xurkitree, Celesteela, Kartana, Guzzlord, Poipole, Stakataka and Blacephalon

Catch Heatran, Marshadow and Enamorus

Catch Walking Wake, Gouging Fire and Raging Bolt

Catch Ting-Lu, Chien-Pao, Wo-Chien, Chi-Yu and Terapagos

Obtain all the mystery gift Pokemon

Obtain all the Pokemon that come from shard trading in Celadon City

Obtain all the Celadon City Game Corner buyable Pokemon

Catch every available Pokemon from Kanto

Catch every available Pokemon from Johto

Catch every available Pokemon from Hoenn (Except Shedinja)

Catch every available Pokemon from Sinnoh (Except Arceus)

Catch every available Pokemon from Unova

Catch every available Pokemon from Kalos

Catch every available Pokemon from Alola

Catch every available Pokemon from Galar (Except Eternatus)

Catch every available Pokemon from Paldea

Catch all 1022 available Pokemon

Obtain all the gifts from showing powerful Pokemon to gym leaders

Collect all of the Mega Stones

Collect all of the non-buyable Z-Crystals (Except for Mewium Z)

Complete all 9 in-game trades