Alternate Methods to Unlock Secrets
In Chapter 2, after Verse 3 onward on any difficulty, walk around the plaza from Verse 3 outside of combat and stand in front of one of the telephones and input one of the codes below. The left phone by the stairs is used for Weapon unlocks, the right phone for Accessories and the stand alone phone on the other end of the plaza is for Characters. Next to the description is the required amount of Halos you must have in your inventory at the time to unlock the matching secret. All directions are input using the D-Pad. These codes allow the immediate unlock of the listed weapon/accessory/character without completing the requirements.

Cheat Effect
Up, Up, Up, Up, Down, Down, Down, Down, Left, Right, Left, Right, X Unlock Pillow Talk (Weapon) - Requires 1 Million Halos
Up, Up, Up, Up, Down, Down, Down, Down, Left, Right, Left, Right, Circle Unlock Jeanne (Character) - Requires 1 Million Halos
Up, Up, Up, Up, Down, Down, Down, Down, Left, Right, Left, Right, Square Unlock Little Zero (Character) - Requires 5 Million Halos
Up, Up, Up, Up, Down, Down, Down, Down, Left, Right, Left, Right, Triangle Unlock Bazillions (Weapon) - Requires 1 Million Halos
Up, Up, Up, Up, Down, Down, Down, Down, Left, Right, Left, Right, L1 Unlock Rodin (Weapon) - Requires 5 Million Halos
Up, Up, Up, Up, Down, Down, Down, Down, Left, Right, Left, Right, L2 Unlock Bracelet of Time (Accessory) - Requires 3 Million Halos
Up, Up, Up, Up, Down, Down, Down, Down, Left, Right, Left, Right, R1 Unlock Eternal Testimony (Accessory) - Requires 2 Million Halos
Up, Up, Up, Up, Down, Down, Down, Down, Left, Right, Left, Right, R2 Unlock Climax Bracelet (Accessory) - Requires 5 Million Halos