Play as Ajim - Encounter Ajim in Arcade mode after winning a certain number of matches by time out. He will then appear in a random match. After he appears, he will be unlocked as a playable character.

Play as Prototype Raiden - Successfully complete Arcade mode with Raiden. Then at the character selection screen, highlight Apharmd B and press X. Highlight Apharmd S and press X. Highlight Dordray and press X(2). Highlight Specineff and press X(2). Highlight Fei-Yen and press X(2). Finally, highlight Cypher and press X(3). Prototype Raiden cannot air dash, double jump, or use turbo weapons but has increased damage.

Play as Prototype Temjin - Successfully complete Arcade mode with Temjin. Then at the character selection screen, highlight Temjin and press X. Highlight Random and press X. Highlight Raiden and press X(2). Highlight Bal-Bados and press X(2). Highlight Angelan and press X(2). Finally, highlight Grys-Vok and press X(3). Prototype Temjin cannot air dash, double jump, or use turbo weapons but has increased damage.

Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

First Win (20 points): Defeated an opponent in Single Player or Multiplayer mode.
Perfect (25 points): Earn a PERFECT in a Single Player or Multiplayer match.
Infight (25 points): Scored a close-range attack in Single Player or Multiplayer mode.
300 Hits (25 points): Scored a total of 300 hits in Single Player or Multiplayer mode.
Rank In (15 points): Uploaded a Score Attack score to rankings.
1 Ranked Match (10 points): Played one ranked match.
10 Ranked Matches (20 points): Played 10 ranked matches.
Watch A Game (10 points): Watched one match.
Custom VR (10 points): Used a customized VR in Single Player mode.
Vs. Ajim (20 points): Battled Ajim (Ajim appears after winning repeatedly by letting time expire in Arcade mode).
Bradtos (10 points): Defeated Bradtos in Arcade mode.
Tangram (10 points): Defeated Tangram in Arcade mode. Letting time expire does not count as a win.