Collect the indicated amount of Rhythpo to unlock the corresponding song for the Chaos section of the Challenge series.
Battle 1 from Final Fantasy 4 (BMS): 30,000 PTS.
Dungeon of the Giants from Final Fantasy (FMS): 32,500 PTS.
Gurgu Volcano from Final Fantasy (FMS): 27,500 PTS.
J-E-N-O-V-A from Final Fantasy 7 (BMS): 40,000 PTS.
Mambo de Chocobo from Final Fantasy 5 (FMS): 37,500 PTS.
Something to Protect from Final Fantasy 9 (FMS): 45,000 PTS.
The Fierce Battle from Final Fantasy 6 (BMS): 35,000 PTS.
The Last Day from Final Fantasy 7 (FMS): 42,500 PTS.
Encore Challenge songs
Collect the indicated amount of Rhythpo to unlock the corresponding song for the Encore section of the Challenge series.
Dancing Mad from Final Fantasy 6 (BMS): 10,000 PTS.
Nakama wo Motomete from Final Fantasy 6 (FMS): 20,000 PTS.
Senkou from Final Fantasy 13 (BMS): 15,000 PTS.
Those Who Fight from Final Fantasy 7 (BMS): 25,000 PTS.
Expert mode for Series Setlists
Complete a Series' three songs in the Challenge section under the Hard difficulty setting to unlock that Series' Setlist for the Expert difficulty.
Sub-characters
Collect eight crystal fragments of the indicated color to unlock the corresponding sub-character.
Aerith from Final Fantasy 7: Pink.
Ashe from Final Fantasy 12: Crimson.
Cid from Final Fantasy 3: Yellow.
Cosmos Final Fantasy Dissidia: Rainbow.
Faris from Final Fantasy 5: Red.
Kain from Final Fantasy 4: Navy Blue.
Locke from Final Fantasy 6: Blue.
Minwu from Final Fantasy 2: Silver.
Princess Sarah from Final Fantasy: Gold.
Prish from Final Fantasy 11: Purple.
Rydia from Final Fantasy 4: Emerald.
Seifer from Final Fantasy 8: Grey.
Sephiroth from Final Fantasy 7: Black.
Snow from Final Fantasy 13: White.
5ivi from Final Fantasy 9: Orange.
Yuuna from Final Fantasy 10: Sapphire.