Metroid Prime: Hunters cheats and cheat codes for Nintendo DS

Unlock other hunters:
Play a multi-player game with someone that has a hunter 
you do not have or beat the hunter in single player.

Unlock Special license icon:
Finish the game with 100% of the scans. 

Unlock Arenas:
Finish the following task 

Compression Chamber -  Play 4 local games
Council Chamber -  Play 16 local games
Elder Passage -  Play 18 local games
Fault Line -  Play 22 local games
Fuel Stack -  Play 20 local games
Harvester -  Play 12 local games
Head Shot -  Complete a four-player match
Incubation Vault -  Play 6 local games
Outer Reach -  Play 10 local games
Sanctorus -  Play 2 local games
Stasis Bunker -  Play 40 local games or 1 WiFi game
Subterranean -  Play 8 local games
Weapons Complex -  Play 14 local games 

Unlock Sound Test:
Beat Gorea's second phase. 

Unlock Suitless Samus:
Finish the game 100% in every file

Unlock Record Table options
Finish the game to unlock new option in the main menu. 
You can view various stats here.