Shin Megami Tensei: Persona 3 Portable Hints & Cheats

Unlockables

Ultimate Opponent
To unlock the ultimate opponent you must clear Margaret's Request. Void Room will be automatically opened at 1/1. Clear it and Pandora's Door will open.
How to Unlock Unlockable
Clear Void Room Ultimate Opponent
Heaven's Door
Reach the Top floor (252nd floor) of Tartarus and beat the Reaper.
New Game +
By clearing the game, you unlock New Game + In New Game + your current level, Persona Compendium, Equipment, Play Time, and Special Items you gained from Maxed Social Links are all carried over from your cleared game. In addition, you gain access to the Monad Block and an optional new boss is unlocked. NOTE: Consumable items do not carry over.
How to Unlock Unlockable
Clear game once New Game +

How to Unlock	Unlockable
Clear Void Room	Ultimate Opponent

How to Unlock	Unlockable
Clear game once	New Game +

Type	Name	File Size
Secrets FAQ	Secrets FAQ by EpacNellaf	37K
Other	Fusion Chart by Boomerang78	246K
Other	Female Social Link Chart by ZelosRaine	200K
FAQ/Walkthrough	FAQ/Walkthrough by vinheim	41K
Other	Male Max Social Links Guide by Finale15632	48K
Game Script	Game Script by kameraida	884K
Other	Male Social Link Chart by ZelosRaine	196K
FAQ/Walkthrough	FAQ/Walkthrough by KADFC	884K
FAQ/Walkthrough	FAQ/Walkthrough by Gray Fox	357K
Other	Male Round One Max Social Links FAQ by penguin_knight	89K
Other	Female Round One Max Social Links FAQ by penguin_knight	92K
Other	Game Mechanics/Persona Database by Arthellinus	763K
Other	Social Link Guide by SalmonCake	17K

Hints & FAQs provided courtesy of GameFAQs.