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Note: This game is also titled Chains Of Power in Japan and The Sword Of Etheria in Europe.

Fill Rex's armor gauge:
Pause game play during a battle, then press Up(2), Down(2), Left, Right, Left, Right, L1, R1. Note: This can only be done once.
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Empty Rex's armor guage:
Pause game play during a battle, then press Up(2), Down(2), Left, Right, Left, Right, R1, L1.

Play as Galumn in EX mode:
Defeat Juju first in Chapter 6.

Play as Juju in EX mode:
Defeat Galumn first in Chapter 6.

EX mode:
Successfully complete Chapter 8.

Hard mode:
Successfully complete the game.

Bad ending sequence:
Successfully complete the game with a "C" overall rank.

Normal ending sequence:
Successfully complete the game with a "B" overall rank.

Good ending sequence:
Successfully complete the game with a "A" overall rank.

Fragment of Intelligence bonuses:
Successfully complete the game with the indicated number of Fragments of Intelligence to unlock the corresponding bonus.

Character Artwork: 3 Fragments of Intelligence
Chapter Titles: 5 Fragments of Intelligence
Movie Player: 7 Fragments of Intelligence
Sound Gallery: 10 Fragments of Intelligence
The 35th Platoon Chapter: 15 Fragments of Intelligence