I'm done with the game and am in past Lucsis now. For a list of the unique/limited-. Accessories are items that bolster the capabilities of Schema in Lightning Returns: FF The 4th Accessory slot for each character will be in whichever primary role hasn't already unlocked an extra Accessory slot. In few words, it's just a way for the game to reduce you capacity to wear anything, anytime; because you have 4 slots for accessories and some. And it's honestly the most ingenious and fun upgrade system I've ever used. An Ascension ability in Final Fantasy XV. . That unlocks the 10th stage of the Crystarium, which contains each character's 4th Accessory slots (and the 5th role levels, and a ton of +HP). For some reason I only have 2. Recommended Accessory Setups: My recommended accessory slots go in order. A mechanic in Final Fantasy XIII and Final Fantasy XIII; accessory slots are unlocked in the Crystarium system. More Accessory Slots are available in the Crystarium as you advance through the game (last slot is unlocked at Stage 10). 4 accessories (1 by default and 3 through upgrades in the Chrystarium, though 3 is the max prior to beating the game). So, each weapons and accessory can be leveled up and you have. I've seen many videos where people have 3 accessory slots. So if you have three slots unlocked, use the first three and so on.