Splinter Cell Double Agent

Elite mode:
Successfully complete Solo mode.

Mission select:
Sucessfully complete the game.
.

Hint: Alternate endings:
Complete the indicated task during the final mission to see the corresponding ending after the bomb is disarmed.
Richard J. Sheltra.

Ending A (Good): Have NSA trust higher than 33% and save cruise ship, Hisham, and Lambert.

Ending B (Normal): Have NSA trust lower than 33% and save two targets (cruise ship, Hisham, or Lambert); or destroy two targets and have NSA trust higher than 33%.

Ending C (Bad): Destroy cruise ship, Hisham, and Lambert; or destroy two targets and have NSA trust lower than 33%.

Hint: Bonus equipment:
Complete the following special objectives in single player 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.

Hint: Ellsworth Penitentiary: Get back to cell:
When you sneak out of your cell by crawling under the bed and getting the walkie-talkie, you must get back under the time limit. When you are up on the grating, instead of taking the pipe down drop off. You will knock out a guard. Then, go back to your cell and act normal. The grating is the only way down.

Hint: Kinshasa: Extended level:
At the end of the ninth mission, Kinshasa, when you have a sniper to shoot Hamza Hishima do not shoot him. If you do you will complete the mission. If you do not, the crane you are on will fall down. Then Emile will yell at Sam for missing Hishima. Sam angrily turns off his radio and the level in now extended for several minutes.

Hint: Okhotsk, Russia Part 2: Bomb defusing:
In Mission 6: Okhotsk, Russia Part 2, after the talk with the Captain he reveals that he has rigged the bombs to go off. Emile Dufraisne tells you that they are in the machine room. Look for a crawl space near you. Go through it and down the ladder. Once you are in the machine room, disrupt the light near to the ladder with your OPC and the camera that you will find nearby. Then, go to the first bomb (you will recognize them by a green light) on the same level as you are on. You can defuse them by cutting the wires in a particular order. The wire you have selected for cutting will be highlighted in green You will know which wire to cut by a short vibration in the controller. When you select the wire the Captain will tell you now have three minutes. The rest of the bombs are located on the machine towers (two of them) and one is upstairs roughly opposite the first bomb. Note: There are three guards in the room. It is recommended to quick save the game before attempting to defuse your first bomb so that you have an idea of how it is done.
The Godfather.

Hint: Disposing Hisham's body:
If you are going to kill Hisham, wait until he is down in the parking space. Kill him and pick up his body. Walk to the back of the red car and put him in the back. Press Place Charge and stand back. Detonate it and the "Opportunity Objective complete - Dispose of Hisham's body" will appear.

Hint: Defeating Emile:
Make sure you have a flash and a frag grenade and full life. There are a lifebox near the door outside of Emile on the right wall. Go outside to Emile and an intermission sequence begins. When it is done, on your left may be a laser beam. Wait for it to go off. When the laser goes off and Emile is done shooting (he will begin again), roll to the next chair or bench. Wait until he is finished shooting again. Continue doing this and go up for the fence/rail. Jump onto it. Go down from it and you now must take Emile out. Walk away for one or two seconds, and make sure you can drop the flash grenade near Emile. Shortly after it is dropped, put your frag grenade in the same place. Emile will not see you drop it and will be defeated. Then, read the computer and defuse the bomb. Note: Take your time.
Oliver Weber.

Hint: Bypassing lasers:
Whenever there are laser beams in your way and you have no EMP ammo or you do not want to use the OCP on your pistol, pick up a knocked out or dead guard. You can use him as an unlimited laser pass.
Achillies.

Glitch: JBA Headquarters part 2: Continue after killing Moss:
Climb to the roof of the headquarters. Take out the guard that is talking to Moss when Moss is not looking. Then, grab Moss and bring him over to the high ladder that takes you down to the starting area. Knock Moss out and pick him up. Drop Moss down the ladder. Quickly jump down the ladder and go to the bunker while Williams is about to tell you that your mission is over for killing Moss. If you entered the bunker in time, instead of you failing the mission you will be able to continue it.
Connor Duffy.

Glitch: Ship: Shooting sound:
In the bonus "Ship" mission, when you get the objective "Make sure Sarah is okay," run to her door. Shoot the door. If shot in the correct place, you will hear the sound of a person being shot.
Justin Nguyen.