1. Cameras can�t spot you from long distances
2. Cameras can�t pick up slow body movements (don�t go running across the room)
3. If you hit a camera in the wrong place a small shower of sparks will show. Do not be fooled! Look for the big shower of sparks to disarm it. Only hitting it in the right area will disarm it.
4. You�re not superman. A 20+ foot drop will kill you.
5. ALWAYS check under doors with the opticable. You don�t want to walk in on a sleeping guard.
6. Pace yourself. Always look for an answer to your problems. Lights, Cans, Bottles, and narrow hallways might help.
7. Do not save any items. Use them while you can because all items will be replenished at the end of a level. DO save bullets. You very rarely get any ammo in a level so if you can, use a KO method.
8. It�s ok to kill a civilian. If one gets in your way, kill him. But don�t kill two civilians or the mission is over.
9. Walk, don�t run. Always crouch but never push too hard on the joystick; even running in crouch will alert the guards.
10. ALWAYS hide corpses. Many guards patrol many areas and it they find a dead man (woman) they will sound the alarms.
11. If a guard finds an unconscious man (woman) he will revive him/her.
12. Use your resources. A can or a bottle will come in handy. Search for them in trash cans.
13. Rolling will help you not get burnt by fire.
14. Double jumping will help you reach high ledges.
15. Don�t expect to have an easy time ever! This game is a very challenging, so pace yourself and take your time. It is a strategy game.
Cheats:
TRAINING LEVEL CODE: 28469
BACKDOOR IN HOUSE: 091772
POLICE PERCINT: 5929
CIA HEADQUARTERS: 7687
CIA HEADQUARTERS (2) CODE: 110598
DEPRESSION CHAMBER: 2019
CIA HEADQUARTERS (3) CODE: 110700
CIA HEADQUARTERS (4) CODE: 0614
[Mission 1 - Police Station]
Keypad #1: 091772
Keypad #2: 5929
[Mission 4 - CIA HQ]
Keypad #1: 7687
Keypad #2: 110598
Keypad #3: 2019
Keypad #4: 110700
Keypad #5: 0614 (If Dougherty gets through the door before you can)
[Mission 5 - Kalinatek]
Keypad #1: 97531
Keypad #2: 33575
Keypad #3: 1250
[Mission 8 - Chinese Embassy, Part II]
Keypad #1: 1436
Keypad #2: 9753
Keypad #3: 1456
Keypad #4: 1834
Keypad #5: 7921
[Mission 9 - Presidential Palace]
Keypad #1: 2126
Keypad #2: 70021
Keypad #3: 66768