Digimon Reapermon: complete Arcade path 1 RUMBLE ARENA.

Keramon: complete Arcade path 2 OUR WAR GAME.

Omnimon: complete Arcade path 3 DIGIMON ADVENTURE.

Lopmon (with Kerpymon): complete Arcade path 4 THE GOLDEN DIGIMENTALS having unlocked Magnamon and Rapidmon (Armor).

Impmon: complete Arcade path 1 with Guilmon, Renamon and Terriermon.

Hawkmon: complete DIGIMON 02 Arcade Path with Gatomon & Wormmon

Armadillomon (with SlashAngemon): complete DIGIMON 02 Arcade Path with Veemon & Patamon (having Hawkmon unlocked).

DemiDevimon: unlock DanDevimon, VenomMyotismon or MaloMyotismon.

Leomon: complete Arcade path DIGIMON TAMERS.

Gallantmon CM: complete Arcade path DIGIMON TAMERS with Guilmon having Impmon, Lopmon and Leomon unlocked.

Imperialdramon PM: compete the first special battle.

Commandramon: complete first part of the second special battle.

NeoCrimson: complete the second special battle.

Monodramon: complete DIGIMON TAMERS paths with Guilmon, Terriermon, Renamon and Leomon. In case you did it in the past then just complete the path with one of them one more time.

Numemon: complete one Arcade path when in Invasion.

Dorumon (with Dorugoramon): complete Arcade path X-ANTIBODY in Hard difficulty.

Ryudamon (with Ouryumon): win 20 battles with Dorumon/Dorugoramon/Alphamon.

Ryudamon (with Dynasmon): complete FRONTIER arcade path with with Agunimon (EmperorGreymon) or EmperorGreymon.

Hackmon: complete Special Battle 4.

Mercurymon: complete DIGIMON FRONTIER path with Agunimon.

Duskmon: complete DIGIMON FRONTIER path with Lobomon.

Loweemon: complete DIGIMON FRONTIER path with Duskmon.

Floramon (with Crusadermon): complete FRONTIER arcade path with with Lobomon (MagnaGarurumon) or MagnaGarurumon.

Alt. Mega Forms Imperialdramon (Dragon Mode): complete DIGIMON 02 Arcade path with Veemon and Wormmon, or win 20 battles with Veemon and Wormmon.

Cherubimon (Virtue): win 30 matches with Terriermon or Lopmon. Or, complete THE GOLDEN DIGIMENTALS Arcade path with Lopmon. Lopmon will be unlocked as well.

Magnamon: complete Arcade path 4 THE GOLDEN DIGIMENTALS with Veemon.

Rapidmon (Armor): complete Arcade path 4 THE GOLDEN DIGIMENTALS with Terriermon.

Plesiomon: win 20 battles as Gomamon.

Ophanimon: complete Arcade path DIGIMON ADVENTURE with Gatomon (having Omnimon unlocked).

Goldramon: complete Arcade path DIGIMON ADVENTURE with Patamon (having Omnimon unlocked).

Varodurumon: complete THE GOLDEN DIGIMENTALS and ADVENTURE paths with Biyomon (in that order), and defeat Varodurumon in the secret battle.

ClavisAngemon: complete THE GOLDEN DIGIMENTALS path with Patamon and Armadillomon, and defeat ClavisAngemon in the secret battle.

Bancholillymon: win 20 battles with Palmon.

Gryphonmon: win 20 battles with Hawkmon.

Sakuyamon Maid Mode: win 20 battles with Renamon.

Megidramon: we keep this requirement as a puzzle, just remember what happened in the TV show of Tamers. The first one completing it can share the exact method

NoblePumpkinmon: complete Special Battle 3.

Omnimon X: complete Arcade path DIGIMON ADVENTURE with Dorumon (Alphamon) in Hard difficulty.

Argomon: win 20 battles as Keramon.

Grandiskuwagamon: complete X-ANTIBODY arcade path with Wormmon/BanchoStingmon.

Alphamon: complete the X-Antibody path with Dorumon/Dorugoramon.

Magnamon X: complete X-Antibody path with Veemon/Magnamon.

HerculesKabuterimon X: complete X-Antibody path with Tentomon/HerculesKabuterimon.

DanDevimon: complete DIGIMON ADVENTURE Arcade Path with Agumon & Patamon.

VenomMyotismon: complete DIGIMON ADVENTURE Arcade Path with Gabumon & Gatomon.

MaloMyotismon: complete DIGIMON 02 Arcade Path with Hawkmon & Armadillomon.

EmperorGreymon: Complete FRONTIER Arcade path with Agunimon, Kazemon and Kumamon.

MagnaGarurumon: Complete FRONTIER Arcade path with Lobomon, Loweemon and Beetlemon.