Cheats & Hints

Tom Clancy's Splinter Cell: Double Agent Hints, Tips

Elite mode
Successfully complete Solo mode on any difficulty setting to unlock the Elite difficulty setting.
Getting back to cell in Ellsworth Penitentiary
When you sneak out of your cell by crawling under the bed and getting the walkie-talkie, you must get back within 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.