The Arnelle & Maynie Character Pack Add-on for 100% Orange Juice has 6 achievements.
Play 10 games as Arnelle (DLC).
As Arnelle, use Intelligence Officer to KO an opponent with full HP. (DLC)
As Arnelle, use Intelligence Officer to observe 20 card draws in one game. (DLC)
Play 10 games as Maynie (DLC)
As Maynie, hold 8 Rage Counters at once. (DLC)
As Maynie, target and KO Ellie with Raging mode. (DLC)