Splinter Cell: Double Agent Cheats - PlayStation 3

Unlock New Skins
Reach the required rank to unlock new skins:

Spy (Second Skin) - Acquire rank "Recruit"
Spy (Third Skin) - Acquire rank "Special Agent"
Upsilon Forces (Second Skin) - Acquire rank "Field Agent"
Upsilon Forces (Third Skin) - Acquire rank "Commander"

Alternate Endings
Complete the required task during the final mission before the bomb is disarmed:

Ending A (Good Ending) - Have NSA trust above 33% and save at least two of the three targets.
Ending B (Normal Ending) - Have NSA trust below 33% and save all three of the targets OR save only one target and have NSA trust above 33%
Ending C (Bad Ending) - Destroy all three targets OR destroy two targets and have NSA trust below 33%

Bonus Equipment
Complete the special objectives in single player mode to unlock new equipment:

Electric Lock Pick - Primary Objectives in JBA HQ 1.
EMP Grenade - Secondary Objectives in Iceland Assignment.
EMP Grenade Attachment - Secondary Objectives in Cozumel Assignment.
Enhanced EMP Device - Primary Objectives in JBA HQ 1.
Enhanced Night Vision - Primary Objectives in JBA HQ 3.
Explosive Sticky Camera Attachment - Secondary Objectives in Iceland Assignment.
Frag Grenade Attachment - Primary Objectives in JBA HQ 3.
Gas Grenade - Primary Objectives in JBA HQ 1.
Gas Grenade Attachment - Secondary Assignment in Cozumel Assignment.
Hacking Device- Force Hack Upgrade - Primary Objectives in JBA HQ 2.
Hacking Device- Software Upgrade - Secondary Objectives in Shanghai Assignment.
Shotgun Shell Attachment - Secondary Objectives in Okhotsk Assignment.
Smoke Grenade Attachment - Secondary Objectives in Shanghai Assignment.
Sonic Grenade Attachment - Primary Objectives in JBA HQ 2.
Ultrasonic Emitter - Secondary Objectives in Ellsworth Assignment.
Wall Mine Flash - Secondary Objectives in Okhotsk Assignment.
Wall Mine Stun - Secondary Objectives in Ellsworth Assignment.

Unlock Elite Mode
Complete Solo Mode to unlock Elite mode.

Secret: Extended Time in Kinshasa Level
At the end of this level, when you are supposed to use a sniper rifle to shoot Hamza Hishima, do not kill him. Instead, wait until the crane you are on falls down. Emile will yell at you for missing Hamza. Your character will then turn off his radio and the level will be extended by several minutes.

Unlock Bonus Skins in Multiplayer Mode
Successfully complete the indicated task in Multiplayer mode to unlock the corresponding skin:

Uspilon Forces (second skin) - Achieve the "Field Agent" rank (general average must be higher than 20%)
Uspilon Forces (third skin) - Achieve the "Commander" rank (general average must be higher than 95%)
Spy (second skin) - Achieve the "Recruit" rank (general average must be higher that 1%)
Spy (third skin) - Achieve the "Special Agent" rank (general average must be higher than 45%)