BATTLEFIELD 2: MODERN COMBAT

Unlock All Weapons
The following commands must be input during gameplay
and within the span of one second: Hold the LB and BR buttons and press right, right, down, up, left, left.

Avoiding Missiles
When flying a helicopter in Multiplayer mode, if you start to get laser targeted (not GTAM), fly as fast as possible, and at the same time get as low to the ground as you possible. If done correctly, the missile will hit the ground and miss you most of the time.

EA Tribute Formation
Unlock the Frag Grenade weapon challenge, then successfully complete all rounds and kill all enemies through round ten. If every enemy is killed, you will go into round eleven. In this round, the soldiers move and create the shape of first an "E", then an "A".

Get Two Helicopters Easily In Air Traffic Control Level
At the beginning of the Air Traffic Control level, you will start out as a sniper. Directly behind you will be a chopper. Turn around as soon as the level begins to get a good shot. Shoot the pilot and the chopper will fall a short distance directly in front of you. Make sure you hit the pilot, and not the chopper or it will explode. Note: It may require a few attempts to hit the pilot. You can then get in and shoot out the turrets with the chopper. When the jeeps come by, hotswap to one and go directly past the turrets and into the helicopter inside the heliport. You will not have acquired two helicopters, making this level very easy.

Multi-player: Ranks
Achieve the indicated number of medals, points per
hour (PPH), and points to earn the corresponding rank.

Brigadier General: 12 medals, 19,390 points, 85 PPH
Captain: 8 medals, 8,430 points, 65 PPH
Chief Warrant Officer: 5 medals, 3,700 points, 50 PPH
Colonel: 11 medals, 16,070 points, 80 PPH
Commanding Sergeant Major: 3 medals, 1,820 points, 40 PPH
Corporal: 0 medals, 70 points, 15 PPH
First Lieutenant: 7 medals, 6,560 points, 60 PPH
Five Star General: 15 medals, 32,000 points, 100 PH
Lieutenant Colonel: 10 medals, 13,150 points, 75 PPH
Lieutenant General: 14 medals, 27,330 points, 95 PPH
Major: 9 medals, 10,620 points, 70 PPH
Major General: 13 medals, 23,150 points, 90 PPH
Master Sergeant: 1 Medal(s), 720 points, 30 PPH
Private: 0 medals, 0 points, 0 PPH
Private First Class: 0 medals, 20 points, 10 PPH
Second Lieutenant: 6 medals, 4,900 points, 55 PPH
Sergeant: 0 medals, 190 points, 20 PPH
Sergeant First Class: 0 medals, 390 points, 25 PPH
Sergeant Major: 2 medals, 1,180 points, 35 PPH
Warrant Officer: 4 medals, 2,650 points, 45 PPH

Suside Run!
All you have to do is be the special ops person and stick four things of C-4 on the helicopter and fly it until you want to jump out. Then you exit the helicopter and deploy your parachute and let your helicopter hit the ground and it will blow up. The C-4 will give it a little extra "boom". I use it all the time online.