Tom Clancy's Splinter Cell: Double Agent
- Bonus multiplayer skins
- Successfully complete the indicated task in Multiplayer mode to unlock the corresponding skin:
- Spy (second skin): Achieve the "Recruit" rank (with a general average higher that 1%)
- Spy (third skin): Achieve the "Special Agent" rank (with a general average higher than 45%)
- Uspilon Forces (second skin): Achieve the "Field Agent" rank (with a general average higher than 20%)
- Uspilon Forces (third skin): Achieve the "Commander" rank (with a general average higher than 95%)
- Bonus equipment
- Successfully complete the indicated special objectives in Solo mode to unlock the corresponding item:
- Electric Lock Pick: Primary objectives in JBA HQ 1
- EMP Device - Enhanced: Primary objectives in JBA HQ 1
- EMP Grenade: Secondary objectives in the Iceland Assignment
- EMP Grenade - Attachment: Secondary objectives in the Cozumel Assignment
- Explosive Sticky Camera-Attachment: Secondary objectives in the Iceland Assignment
- Frag Grenade - Attachment: Primary objectives in JBA HQ 3
- Gas Grenade: Primary objectives in JBA HQ 1
- Gas Grenade - Attachment: Secondary objectives in the Cozumel Assignment
- Hacking Device - Force Hack Upgrade: Primary objectives in JBA HQ 2
- Hacking Device - Software Upgrade: Secondary objectives in the Shanghai Assignment
- Night Vision - Enhanced: Primary objectives in JBA HQ 3
- Shotgun Shell - Attachment: Secondary objectives in the Okhotsk Assignment
- Smoke Grenade - Attachment: Secondary objectives in the Shanghai Assignment
- Sonic Grenade - Attachment: Primary objectives in JBA HQ 2
- Ultrasonic Emitter: Secondary objectives in the Ellsworth Assignment
- Wall Mine - Flash: Secondary objectives in the Okhotsk Assignment
- Wall Mine - Stun: Secondary objectives in the Ellsworth Assignment
- Elite mode
- Successfully complete Solo mode on any difficulty setting to unlock the Elite difficulty setting.
- Alternate endings
- Successfully complete the following tasks to get the corresponding ending:
- Ending A - Good: Have your NSA trust above 33% and save at least two of the three targets (Crouse Ship, Hisham, Lambert).
- Ending B - Normal: Have your NSA trust below 33% and save all three targets (Crouse Ship, Hisham, Lambert). Alternately, have your NSA trust above 33% and destroy two of the three targets.
- Ending C - Bad: Destroy all three targets (Crouse Ship, Hisham, Lambert). Alternately, have your NSA trust below 33% and destroy two of the three targets.