When you are at the multiplayer menu screen go to the place where you will get to pick a helicopter or a tank. Pick the tank and pick the level that has the house and the giant castle. Be GOOD!!!!!! Then you get a tank and you climb the giant rock on youre middle left then once you are up there you can snipe with bombs till youre hearts cuntant.
Once you start the Enemies Vanquished mission, drive until you come past the police car, then, turn around the other direction and head back up the road. Keep on driving until you crash at the dead end. The police car will follow you and, hopefully, will push your car upward, landing on the higher ground of the snow. You may then drive anywhere you please, even out of the stage.
To acheive the Torpedo-like Spin, you must first enter the Enemies Vanquished mission. Then press the following buttons to enter the Bonus Race. Hold L, then press X twice, B twice and Y. Just before you enter the tunnel leading to the blocked bridge, make sure you are touching the metal bars on the left of you. If you do it correctly, you will spin.
On "The Exchange" when you start the mission go down the stairs and kill the first guy with a the silencer on your gun then get the sniper and kill the guy in the right tower.
On "Enemies Vanquished" when you come to the end of the town go up the stairs and the you get a Bond token then go through the Chalet you come out on the road as normal.
On "Double Cross" when Mayhew tells you to find his safe it toke me ages to figure out that the safe it the dragon statue. When the assasian comes whatever you do don't let him use his sword on you use the stun grenades from a distance.
On "Night Shift" go into Drake's office and you will find a brilliant gun called the Scorpian it ha s aheatseeker.