Here is the full list of all 35 Battle High 2 A+ achievements.
Perform 5 Reversals.
Win 1 round without losing any health in Arcade Mode.
Perform 100 Elemental Specials.
Perform 10 Rush Cancels.
Perform a 10-Hit Combo!
Perform 10 Elemental Specials.
Win 25 rounds without losing any health in Arcade Mode.
Perform 5 Throw Breaks.
Perform 50 Throw Breaks.
Perform 100 Rush Cancels.
Perform a 40-Hit Combo.
Perform 10 Elemental Supers.
Perform 100 Elemental Supers.
Perform 50 Reversals.
Swap stage dimensions in Options.
Take a listen to old tracks! Swap music for at least 1 character in Music Configuration.
Fight 1 modified matches in Versus Mode.
Fight 30 modified matches in Versus Mode.
Defeat Principal in Arcade Mode. (Hint: Points, points, points!)
Collect a lot of journal entries.
Earn all of Jiro's Journal Entries.
Earn all of Shinji's Journal Entries.
Earn all of Kazuo's Journal Entries.
Earn all of Michelle's Journal Entries.
Earn all of Bryan's Journal Entries.
Earn all of Ryken's Journal Entries
Earn all of Arvid's Journal Entries.
Earn all of Mai's Journal Entries.
Earn all of Khai's Journal Entries.
Earn all of HW's Journal Entries.
Earn all of Klein's Journal Entries.
Earn all of Jada's Journal Entries.
Earn all of Principal's Journal Entries.
Earn all of Lucio's Journal Entries.
Earn all of Beat's Journal Entries.