Here are some cheats and tips for the game Metroid Prime 2: Echoes.
In-game reset:
Hold Start + B + X for three seconds.
Hard difficulty:
Successfully complete the game under the normal difficulty setting.
Promo gallery:
Complete 40% of the logbook scans.
Character gallery:
Complete 60% of the logbook scans.
Creature gallery:
Complete 80% of the logbook scans.
Boss gallery:
Complete 100% of the logbook scans.
Rough Sketch gallery:
Successfully complete game under the normal difficulty setting.
Storyboard gallery:
Successfully complete game under the hard difficulty setting.
Samus Body Suit FMV sequence:
Collect 75% of the items.
Dark Samus ending sequence:
Collect 100% of the items.
Dark Echoes multi-player soundtrack:
Successfully complete the game.
Darkness multi-player soundtrack:
Successfully complete the game.
Luminoth multi-player soundtrack:
Talk to U-Mos.
Pirate Fear multi-player soundtrack:
Restore energy to Agon Temple then talk to U-Mos.
Sanctuary multi-player soundtrack:
Restore energy to Sanctuary Temple then talk to U-Mos.
Torvus Bog multi-player soundtrack:
Restore energy to Torvus Temple then talk to U-Mos.
Pipeline multi-player arena:
Restore energy to Torvus Temple then talk to U-Mos.
Spires multi-player arena:
Restore energy to Sanctuary Temple then talk to U-Mos.