Super Smash Bros. 6/Unlockables

Here is the list of unlockables in Super Smash Bros. 5.

Characters
Each character can be unlocked via any one of three methods: by playing a given number of Vs. matches, in Adventure mode, or by meeting a different unlock requirement. When unlocked through Into The Subspace Shadows, the character is immediately playable; when using a different unlock method, they must first be defeated in a 1-stock match.

Luigi
Clear Classic Mode for the first time or complete 10 matches.

Mr. Game & Watch
Complete Classic Mode with 30 characters or complete 15 matches

Dr. Mario
Complete Classic Mode as Mario on intensity 2.0 or higher, or complete 20 matches.

Pichu
Complete Classic Mode without using any continues or complete 25 matches.

Roy
Complete Classic Mode as a Fire Emblem character (excluding Marth) or complete 30 matches.

Falco
Complete 100-Man Smash for the first time or complete 35 matches.

Mewtwo
Play for a total of an hour or complete 40 matches.

R.O.B
Collect at least 250 trophies or complete 45 matches.

Wolf
Win Smash Run final battles with five characters or complete 50 matches.

Dark Pit
Complete Classic Mode with 8 or more characters, or complete 55 matches.

Lucina
Complete Classic Mode with Marth without using any continues or complete 60 matches.

Duck Hunt
Play 5 matches on Wrecking Crew stage or complete 65 matches.

Captain Toad
Play 10 matches on Super Bell Hill or complete 70 matches.

Dr. Luigi
Win 10 times as Luigi on Dark Moon Mansion or complete 75 matches.

Nurse Peach
Clear Classic Mode with either Peach, Daisy or Rosalina on intensity 4.0 or higher, or complete 80 matches.

King K. Rool
Complete "The Heavyweights" event or complete 85 matches.

Volga
Clear Classic Mode as Ganondorf in Classic Mode or complete 90 matches.

Kamek
Clear Smash Run as Yoshi or complete 95 matches.

Sylux
Win 20 matches as Samus or complete 100 matches.

Waluigi
Win a Smash Run final battle as Wario or complete 105 matches.

Captain Syrup
Play 30 matches on Game & Wario stage or complete 110 matches.

Medusa
Complete Classic Mode as Dark Pit on intensity 5.0 or complete 115 matches.

Chibi-Robo
Collect 20 pieces of Equipment or complete 120 matches.

Machamp
Play as a Pokémon character in Smash Run, win the final battle or complete 125 matches.

Sceptile
Clear 35 event matches or complete 130 matches.

Black Shadow
Play for a combined total of 3 hours or complete 135 matches.

Marina Liteyears
Complete Classic Mode with 50 characters or complete 140 matches.

Unlockable Pokémon

 * Victini: Complete Classic Mode as any Pokémon character
 * Celebi: Unlock Pichu
 * Genesect: Complete All-Star Mode as Lucario on normal difficulty or higher
 * Xerneas: Complete Into the Subspace Shadows for the first time
 * Meloetta: Play 10 matches on Wii Music Concert