Tom Clancy's Splinter Cell Double Agent Cheats for GameCube

The ending you will get in the game depends on what bombs you defused in Mission 8 - JBA Headquarters Part 2).
Unlock JBA Ending:
Do not defuse either bomb.
Unlock Neutral Ending:
Defuse only one of the bombs.
Unlock NSA Ending:
Defuse both Nashville and L.A. Bombs.

To unlock the following items for Single Player mode complete the corresponding special objectives.
Unlock Electric Lock Pick:
Complete the primary objectives in JBA HQ 1
Unlock EMP Device - Enhanced:
Complete the primary objectives in JBA HQ 1
Unlock Hacking Device - Force Hack Upgrade:
Complete the primary objectives in JBA HQ 2
Unlock Frag Grenade - Attachment:
Complete the primary objectives in JBA HQ 3
Unlock Gas Grenade:
Complete the primary objectives in JBA HQ 1
Unlock Sonic Grenade - Attachment:
Complete the primary objectives in JBA HQ 2
Unlock Night Vision - Enhanced:
Complete the primary objectives in JBA HQ 3
Unlock Gas Grenade - Attachment:
C..

Successfully beat the main storyline once to unlock this mode which makes enemies even tougher than the Hard difficulty and only gives you your OCP Pistol and a knife but no SMG.

Unlock ALL Multiplayer Maps
Win 6 games as a Upsilon Force member, Win 6 games as a Spy and play a total of 25 games.

Unlockable Skins
Play Multiplayer and get the following achievements to unlock the corresponding skins.
Unlock Spy - 2nd Skin:
Achieve Recruit Level with a general average higher than 1%.
Unlock Uspilon Forces - 2nd Skin:
Achieve Field Agent Level with a general average higher than 20%.
Unlock Spy - 3rd Skin:
Achieve Special Agent Level with a general average higher than 45%.
Unlock Uspilon Forces - 3rd Skin:
Achieve Commander Level with a general average higher than 95%.

Unlocking the 3 Different Endings
To unlock the the different endings when the bomb is dis..