Successfully complete the game to unlock the Sound Test option and Gallery option.

To unlock the Hard difficulty setting, successfully complete the game once, then complete it again on the cleared saved game file.

To unlock the Movie gallery, collect the Memory Crystal from Dragon's Abyss Arena.

Unlock the following titles by performing the corresponding tasks and then talk to Lycan at the Argent statue:

TITLE - HOW TO UNLOCK
1. Unknown - Clear the game.
2. Reknown Hero - Kill 100 enemies. Also unlocks Celestis Mine and Ragnafact Devasti.
3. Legendary Hero - Kill 1,000 enemies.
4. Unknown - Create items 100 times.
5. Master Force Scholar - Create items 300 times.
6. Keen-eyed Adventurer - Harvest item 50 times.
7. Component Hunter - Harvest item 200 times.
8. Unknown - Open chests 100 times.
9. Force Collector - Accumulate 10,000 FP.
10. Force Fanatic - Accumulate 99,999 FP.
11. Able Combatant - Main character reaches level 25.
12. Furious Fighter - Main character reaches level 50.
13. Unknown - Main character reaches level 99.
14. Unknown - Obtain all weapons.
15. Ragnafact Blacksmith - Max a Hexyz weapon level.
16. Creation Crusader - Purify all recovery points.
17. Technique Master - Overkill the enemies 50 times.
18. Unknown - Ambush enemies 50 times.
19. Raging Demon - Activate Force Burst 50 times.
20. Unknown - Run from battle 50 times.
21. Unknown - Let Force Eater steals at least 5,000 FP from you.
22. Force Eater Beater - Defeat 10 Force Eaters.
23. Unknown - Kill your higher level clones. Note: In purple room outside judgment tower.
24. Traveler of Berge - Play for 15 hours.
25. Unknown - Play for 100 hours.