Enter the code T1A9K7E5S0H6I1A9R0A8K1A2W1A8@SQUARE-ENIX to unlock this feature. When this code has been entered your friend card colour will become gold.

Below is a list of additional battle music and how you unlock it. Most can be accessed by simply defeating Chaos.

Unlock FFI 'Town Theme':
Beat Chaos in Shade Impulse and purchase for 500 PP in ETC menu.

Unlock FFII 'Rebel Army':
Beat Chaos in Shade Impulse and purchase for 500 PP in ETC menu.

Unlock FFIII 'Crystal Tower':
Beat Chaos in Shade Impulse and purchase for 500 PP in ETC menu.

Unlock FFIV 'Red Wings':
Beat Chaos in Shade Impulse and purchase for 500 PP in ETC menu.

Unlock FFV 'The Decisive Battle.
Beat Chaos in Shade Impulse and purchase for 500 PP in ETC menu.

Unlock FFVI 'Dancing Mad':
Beat Chaos in Shade Impulse and purchase for 500 PP in ETC menu.

Unlock FFVII 'Bombing Mission':
Beat Chaos in Shade Impulse and purchase for 500 PP in ETC menu.

Unlock FFVIII 'Man with the Machine Gun'
Beat Chaos in Shade Impulse and purchase for 500 PP in ETC menu.

Unlock FFIX 'Dark Messenger':
Beat Chaos in Shade Impulse and purchase for 500 PP in ETC menu.

Unlock FFX 'Fight With Seymour'
Beat Chaos in Shade Impulse and purchase for 500 PP in ETC menu.

Unlock FFXI 'Awakening':
Beat 'Distant Glory Hero" and purchase for 500 PP in ETC menu.

Unlock FFXII 'Fight to the Death':
Beat 'Distant Glory Villan' and purchase for 500 PP in ETC menu.

Enter the following codes at the 'Friends' menu to unlock the corresponding ghost.

Unlock Aaron:
Enter the code AK6ATR7ECD8N

Unlock Ahriman:
Enter the code MAPE5REPE4T5

Unlock Bash:
Enter the code LAXBU6GRA4U

Unlock Behemoth:
Enter the code PASS3SU433KA

Unlock Cait Sith:
Enter the code P2KET4DTCW6

Unlock Death Machine:
Enter the code CH4D9EN3A3TE3

Unlock Fusuya:
Enter the code SF5AUS5WUJ39Y

Unlock Gilgamash:
Enter the code GU3RK3UG4AMP

Unlock Matoya:
Enter the code M8ATK2TCPAYA

Unlock Ming-Wu:
Enter the code MR3ZNNGXU72P

Unlock Ninja:
Enter the code H4NA53NJRE9

Unlock Oltoross:
Enter the code 8TA9CQQTAC

Unlock Omega:
Enter the code 6C6M6E6G6A6

Unlock Ragna:
Enter the code RJAGH5UE6NA7

Unlock Red Wing:
Enter the code 6A3K2A538TS

Unlock Seifer:
Enter the code SME4SA39SFAH

Unlock Shantotto:
Enter the code 469J3ELEVENWS

Unlock Siegfried:
Enter the code FGR3ET5KKJC

Unlock Steiner:
Enter the code A3NASX6UXT7

Unlock Vivi:
Enter the code VTS3RAPLVKE3

Unlock Wakka:
Enter the code WRKA3KUMKRA

Unlock Yuffie:
Enter the code PASS3CH3GC45

At the 'Main' menu go to Multiplayer and select the 'Friend Card' edit menu. Then go to the 4th character set by pressing select 3 times and erase everything and insert the following codes to unlock the corresponding player icon.

Unlock Final Fantasy Agito XIII:
Enter the code 7TY2AE6KLUL8

Unlock Final Fantasy Agito XIII:
Enter the code TCAMABR3ADTQ

Unlock Final Fantasy Versus XIII:
Enter the code HEEBANRLTGS

Unlock Final Fantasy Versus XIII:
Enter the code NGAA3NMB3URGR

Unlock Final Fantasy XIII:
Enter the code 28C7KMT23M48

Unlock Final Fantasy XIII:
Enter the code HK4A3ST6HA3S4

Unlock Icon 303:
Enter the code SCHKJKDB3CH6C

Unlock Icon 304:
Enter the code HMM48AC4JH3

At the 'Friends' menu enter the following codes to unlock the corresponding recipe.

Unlock Sagittarius Recipe:
Enter the code UC6H3M3778CH3

Unlock Capricorn Recipe:
Enter the code UC5H3J46F3MZA

Unlock Aquarius Recipe:
Enter the code MZCC3H38ZTUK

Unlock Taurus Recipe:
Enter the code KRCYGU7RJ8E3

Unlock Virgo Recipe:
Enter the code ECTLMCCW3NMC

Unlock Aries Recipe:
Enter the code 33MKERDTA2AK

Unlock Cancer Recipe:
Enter the code SSAYECXK4CY6

Unlock Gemini Recipe:
Enter the code H3CSH3SDA3YUN

Unlock Leo Recipe:
Enter the code HA3SESGAH3W3A

Unlock Libra Recipe:
Enter the code TGALKCAWTNA

Unlock Pisces Recipe:
Enter the code QTAK5UWATGA

Unlock Scorpio Recipe:
Enter the code H336DETYA23X

At the 'Main' menu select the Multiplayer option and open the 'Friend Card Edit' menu and enter the code PASS3CH3GC45 (without he quotes) using the fourth character set. Then choose the second of the two English character sets by pressing 'Select' 3 times and a Yuffie Friend Card, which includes a Lv45 Cloud Ghost will become unlocked.

This feature becomes available when you beat ALL hero's story. Shade Impulse consists of four new story modes, each with 5 boards, and you have to beat ALL of them to get to Chaos and eventually the secret characters.

Complete the indicated task or if there is no task simply buy the character in the shop for the specified amount of PP.

Unlock The Emperor Mateus:
Buy him for 500 PP in the shop.

Unlock Cloud of Darkness:
Buy her for 500 PP in the shop.

Unlock Exdeath:
Buy him for 500 PP in the shop.

Unlock Garland:
Buy him for 500 PP in the shop.

Unlock Golbez:
Buy him for 500 PP in the shop.

Unlock Jecht:
Buy him for 500 PP in the shop.

Unlock Kefka:
Buy him for 500 PP in the shop.

Unlock Kuja:
Buy him for 500 PP in the shop.

Unlock Sephiroth:
Buy him for 500 PP in the shop.

Unlock Ultimecia:
Buy her for 500 PP in the shop.

Unlock Gabranth:
Complete his Story mode. Then buy him for 1,000 PP in the shop.

Unlock Shantoto:
Complete her Story mode. Then buy her for 1,000 PP in the shop.