JoJo's Bizarre Adventure: All Star Battle R/Stone Ocean

Extra Battles
These are listed as they appear from left to right.

Foo Fighters (F.F.) vs Kars

 * Difficulty: ★★★☆☆
 * Special Rules
 * Kars starts in Ultimate Thing mode.
 * Player's HH Gauge continuously refills.
 * Player's attack increased.
 * Secret Missions
 * 1) Use the "I've overcome my weakness" style

Narciso Anasui (Narciso Anastasia) vs Jotaro Kujo (Part 4)

 * Difficulty: ★★☆☆☆
 * Special Rules
 * Player's attack increased.
 * Secret Missions
 * 1) Do a normal attack with Stand on
 * 1) Do a normal attack with Stand on

Ermes Costello vs Jean Pierre Polnareff

 * Difficulty: ★★★★☆
 * Special Rules
 * Player's HH Gauge does not fill while their Stand is ON.
 * Secret Missions
 * 1) Use the "Here's where ya stick it!" skill
 * 2) Land a counterattack
 * 3) Land a GHA

Jolyne Cujoh vs. Trish Una

 * Difficulty: ★☆☆☆☆
 * Special Rules
 * None.
 * Secret Missions
 * 1) Land the First Attack

Enrico Pucci (Father Pucchi) vs. DIO

 * Difficulty: ★★★☆☆
 * Special Rules
 * Opponent's health continuously refills.
 * Opponent's defense increased.
 * Player's HH Gauge continuously refills.
 * Secret Missions
 * 1) Win without losing any rounds
 * 2) Use a GHA

Jolyne Cujoh vs. Jotaro Kujo (Part 4)

 * Difficulty: ★☆☆☆☆
 * Special Rules
 * Player's attack increased.
 * Secret Missions
 * 1) Down your opponent
 * 2) Attack the opponent's Stand

Ermes Costello vs. Akira Otoishi

 * Difficulty: ★★★☆☆
 * Special Rules
 * Opponent's HH Gauge continuously refills.
 * Secret Missions
 * 1) Land a 5 hit combo
 * 2) Land a GHA
 * 1) Land a GHA

Jolyne Cujoh vs. Enrico Pucci (Father Pucchi)
(Requires 2 battles cleared on same page to unlock)
 * Difficulty: ★★★★☆
 * Special Rules
 * Win within a count of 60.
 * Opponent's attack increased.
 * Player's attack increased.
 * Secret Missions
 * 1) Attack the opponent's Stand
 * 2) Set off an arena gimmick
 * 3) Win without losing your disc
 * 4) Win with a GHA