JoJo's Bizarre Adventure: All Star Battle R/Diamond Is Unbreakable

Josuke Higashikata 4 vs. Rohan Kishibe

 * Difficulty: ★☆☆☆☆
 * Special Rules
 * Opponent's defense is decreased.
 * Josuke Higashikata 4 starts in Enraged Mode.
 * Secret Missions

Shigekiyo Yangu vs. Okuyasu Nijimura w/Josuke Higashikata 4

 * Difficulty: ★★☆☆☆
 * Special Rules
 * None.
 * Secret Missions
 * 1) Do a normal attack with Stand on
 * 2) Use an HHA

Josuke Higashikata 4 vs. Okuyasu Nijimura

 * Difficulty: ★☆☆☆☆
 * Special Rules
 * Player's attack increased.
 * Secret Missions

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

Jotaro Kujo (Part 4) vs. Diavolo

 * Difficulty: ★★★☆☆
 * Special Rules
 * Opponent's attack increased.
 * Secret Missions
 * 1) Land a 20 hit combo
 * 2) Land a GHA
 * 1) Land a GHA

Akira Otoishi vs. Robert E.O. Speedwagon

 * Difficulty: ★★★☆☆
 * Special Rules
 * Player's HH Gauge continuously refills.
 * Player's defense decreased.
 * Secret Missions
 * 1) Use a GHA
 * 1) Use a GHA
 * 1) Use a GHA

Rohan Kishibe vs. Narciso Anasui (Narciso Anastasia)

 * Difficulty: ★★★★☆
 * Special Rules
 * Opponent's HH Gauge continuously refills.
 * Player's attack decreased.
 * Secret Missions

Yoshikage Kira vs. Funny Valentine

 * Difficulty: ★★★☆☆
 * Special Rules
 * Opponent's HH Gauge continuously refills.
 * Secret Missions
 * 1) Use the "Anything can be a bomb" skill (normal )
 * 2) Land the "Ha!" skill (normal )
 * 3) Win with a GHA

Boss Battles
(Requires 2 battles cleared on same page to unlock)

Josuke Higashikata 4 vs. Kosaku Kawajiri

 * Difficulty: ★★★★☆
 * Special Rules
 * Player's health continuously drains.
 * Secret Missions
 * 1) Attack the opponent's Stand
 * 2) Land an HHA
 * 3) Land "Meet my homing missile!" from the HHA ( during HHA)
 * 1) Land "Meet my homing missile!" from the HHA ( during HHA)

Koichi Hirose vs. Yukako Yamagishi

 * Difficulty: ★★☆☆☆
 * Special Rules
 * Yukako Yamagishi starts in Love Deluxe state (HH Gauge does not decrease).
 * Player's attack increased.
 * Opponent's defense dncreased.
 * Secret Missions

Rohan Kishibe vs. Koichi Hirose

 * Difficulty: ★☆☆☆☆
 * Special Rules
 * Player's HH Gauge continuously refills.
 * Secret Missions
 * 1) Land the First Attack

Akira Otoishi vs. Okuyasu Nijimura

 * Difficulty: ★★☆☆☆
 * Special Rules
 * Win within a count of 30.
 * Player's HH Gauge continuously refills.
 * Secret Missions
 * 1) Land the "Time to get electric, baby!" throw (close )
 * 2) Land a GHA
 * 1) Land a GHA

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

Okuyasu Nijimura vs. Vanilla Ice (Cool Ice)

 * Difficulty: ★★★☆☆
 * Special Rules
 * Opponent's health continuously refills.
 * Player's attack increased.
 * Player's HH Gauge continuously refills.
 * Secret Missions
 * 1) Use a GHA
 * 1) Use a GHA

Kosaku Kawajiri vs. Narciso Anasui (Narciso Anastasia)

 * Difficulty: ★★★★☆
 * Special Rules
 * Opponent's attack increased.
 * Opponent's HH Gauge continuously refills.
 * Opponent's defense increased.
 * Secret Missions
 * 1) Land the "Can I ask your name?" throw (close )
 * 1) Land the "Can I ask your name?" throw (close )
 * 1) Land the "Can I ask your name?" throw (close )

Yukako Yamagishi vs. Bruno Bucciarati

 * Difficulty: ★★★☆☆
 * Special Rules
 * Player's HH Gauge continuously refills.
 * Opponent's attack increased.
 * Opponent's defense increased.
 * Secret Missions
 * 1) Land an HHA
 * 1) Land an HHA
 * 1) Land an HHA

Koichi Hirose vs. Johnny Joestar

 * Difficulty: ★★★☆☆
 * Special Rules
 * None.
 * Secret Missions
 * 1) Land the grab "Fwoosh." (close )
 * 1) Land the grab "Fwoosh." (close )
 * 1) Land the grab "Fwoosh." (close )

Boss Battles
(Requires 4 battles cleared on same page to unlock)

Jotaro Kujo (Part 4) w/ Koichi Hirose vs. Yoshikage Kira

 * Difficulty: ★★★★★
 * Special Rules
 * Player starts with 50% health.
 * Win within a count of 60.
 * Secret Missions