Blank Points preview
Complete all of the following tasks to unlock a preview of the next game in the series. Complete the Final Episode in Standard, Critical, and Proud modes and have a 100% Reports section completion in Standard mode. The preview will appear at the end of the game.
Final Chapter
Collect all Xehanort reports as every character, then complete all three Story modes.
Gaining abilities
Abilities such as Last chance, Combo Boost and HP Boost can be obtained through Command Fusion. You must combine two commands and add a item which will give the command an ability to learn. For example, if you combine Cura and Cura, and also add a Rise Crystal, the result will be a Curaga command with the ability "Air Combo Boost". Once you master this Curaga command, the ability "Air Combo Boost" will still be available even if you unequip the command.
Mastering D-links
To level D-links, you must first use it and kill enemies until a star-shaped item is dropped. Two of these are required to completely master a D-link.
Strongest Shotlock
Reach level 29 in Mirage Arena and it will be in your inventory.
Trinity Archives option
Successfully complete Story mode.