1) Crouching raises the chance of you not getting hit significantly.
2) Always look for available cover at all times.
3) The Q Spider can unlock secret areas and items by crawling through open spaces and scouting.
4) Never charge into a open space without an automatic gun and a lot of ammo.
5) Missiles are very easy to waste and can't be replenished so use them very sparingly.
6) Don't rely on hand-to-hand combat.
7) Always keep your P99 in reserve in case of emergencies.
8) You are a spy which means you need to be silent, crouch, walk, and silently disable men.
No Medals With Cheats
If you activate a cheat, such as the Golden Gun, you will not be awarded a medal for completing the mission, no matter how well you do.
Regain Health
Crouch to slowly refill your health.
Earning Multi Player Points
To earn multi player points used for unlocking bonus characters and arenas, you'll need to complete optional objectives in the co-op campaign. To view these objectives, select the mission you want to tackle and hit CIRCLE. You'll then be shown what the bonus objectives are. Completing these objectives will earn you 10 multi player points. You can also view these challenges on the pause menu of a co-op game.
Tips
1) Crouching raises the chance of you not getting hit significantly.
2) Always look for available cover at all times.
3) The Q Spider can unlock secret areas and items by crawling through open spaces and scouting.
4) Never charge into a open space without an automatic gun and a lot of ammo.
5) Missiles are very easy to waste and can't be replenished so use them very sparingly.
6) Don't rely on hand-to-hand combat.
7) Always keep your P99 in reserve in case of emergencies.
8) You are a spy which means you need to be silent, crouch, walk, and silently disable men.
Pontchartrain Bridge: Float on water
About half way through the level, take the ramp on the side to complete the Bond Moment. However, instead of pressing Left, press Right and Bond will not land on the freeway. Instead, he will land on the water but will not fall in. Note: Once on the water there is no way to return to the freeway.
Kiss Kiss Club: Pretend gun
After opening the door in the Kiss Kiss Club, kill all the guards. Before you go into the door, put away your weapon. When you see the intermission sequence, you will actually see Bond holding his hand up with an imaginary gun in it. He will still pull his finger back and you will see the gun move.
M.I.6. Combat simulator
Stealth is always the best option. One of the easiest ways to do this is as follows. When you start, go up the stairs to your right. Before you get to the end, wall hug to check if anyone is there. If there is, take out your silenced PP7 and manually aim at his head. Then, shoot to kill. Crouch down and go along the balcony, silently picking off your enemies by shooting them in the head with your silenced PP7.
Dart gun
When you get the Dart Gun from Q, he says it will knock out your enemies for a few hours. However, it will actually kill them in one hit, just like the Golden Gun. Note that it does not have a long range. Save the gun until you are low on health or are surrounded; it is very useful.
Eliminating enemies quickly
While you are facing a lot of enemies, press L to aim and shoot with R. Continue to press L and you will go from enemy to enemy, weakening each without eliminating one by one. You can also do that and dodge shots if they get a chance to shoot you by pressing B.
View Bond moments
Highlight a mission at the selection and press Y(2).
Interview with the cast
Watch the credits and wait for the end (which takes awhile). At the end it seems like the Everything or Nothing introduction with the Mya song starts. Actually when the glass breaks, John Cleese's face appears and that is the interview. If you do not want to watch all of the credits, just press A when it starts to skip through it.
Multiplayer arenas
Get the following number of points to unlock the corresponding arena in multi-player mode.
Successfully complete the indicated level to unlock the corresponding Bond gadget.
EMP Grenade: The Pontchartrain Bridge
Frag Grenade: Ground Zero
Network Tap: Diavolo's Plan
Q-Cloak: Sand Storm
Q-Spider: Sand Storm
Q-Spider Dart: Diavolo's Plan
Q-Spider Explosive: A Show of Force
Q-Spider Nano: Diavolo's Plan
Rappel: Ground Zero
RC Car: Sand Storm
Sleeper Dart: Sand Storm
Strobe Grenade: Sand Storm
Thermovision: Ground Zero
Completion bonuses
Successfully complete all single player levels to unlock the MI6 Combat Simulator and MI6 Survival Test bonuses.