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.

Complete each achievement to receive the allotted gamerscore.

To unlock the extra costumes, you have to beat all chapters on Normal first. Load your Clear Data, go to "Gates of Hell", and then go to "Rodin's Treasure" menu. You'll see a "Super Mirror" there, which cost 100.000 Halos. Purchase this, and you'll unlock the rest of the costumes (Couture Bullets). To change costumes, press "RB" at the Chapter Start screen, go to "Costume Change", and then choose your costume there.

To unlock these extra difficulty, you need to beat all chapters for one difficulty.

The following accessories will be available to purchase at the Shop, after their specific requirement has been completed.

Complete the following conditions to unlock the hidden characters below. In order to use them, you must select "New Game" and then the character. All data will be reset for that character only and will not affect your main file.

Complete the following conditions to receive the weapons listed below.

Normally, Chapter 8 Verse 3 and Chapter 14 play remixes of BGM from Afterburner and Space Harrier. To hear the original tracks, hold down both LB and LT (X360) or L1 and L2 (PS3) as the proceeding cutscene ends.