Bad Company 2 takes skill, you can't just run out like rambo and expect to get a killstreak without dying, I myself sometimes do this, and fail miserably.

1. Never go solo, always stick with your team and you know, try to help them by throwing ammo/health boxes when needed.
2. Always spot enemies, doing this will help your team a lot and give you a shit load of points. Oh, I forgot, press q to spot enemies.
3. Don't go recon just for the sake of balancing your K/D ratio, instead go medic or assault.
4. Always use the UAV with the increased optics package, this enables you to attack from long range while being out of the danger zone.
5. If the M-COM station is inside a destructable building, rape the shit out of it with rockets and C4.

And guys, feel free to post more tips.

6. If you plan to attack the enemy, always do your best to flank them; attack them from the side. If your playing the 'Assault' class during this, bring a 'Medic' with you, and vice versa.
7. When playing Recon, cover is everything. Use your camouflage if it isn't obvious enough. When playing the 'counter-sniper', always report the enemy sniper's whereabouts to your team. Don't play selfish and act like you can take care of him on your own. He just might have an M95 with him, that's bad news for your head.
8. People just love getting noob-tubed (may mean many different things, the most common being getting killed by the M2 Carl Gustav). Sooo, noob-tube them back. But, DO NOT waste your rockets on enemy Soldiers, they might just have a tank at their disposal. Rape the crap out of the tanks, not the soldiers.

Great tips, I can brush up my game with these. + rep both of ya.

Remember, the Carl Gustav is a great weapon.

lol. Nahh... I wouldn't think so, I would blame the Carl for all your deaths. And the fact that most of the time, our teammates PWN! *sarcasm intended*

9.) An edit to the above, you should ALWAYS report the position of enemy units. Knowing the position of a tank, or a gun emplacement with an enemy manning it is ALWAYS useful.

10.) If your planning on assaulting a building that is KNOWN to have enemy occupants, spam grenades. If playing Assault, all the better because of the 'nade launcher. The grenades arc, and so have a tendency to kill those who are hiding in the hard-to-reach areas.

11.) Armored vehicles (tanks and IFV's (Infantry Fighting Vehicles)) are better used at the side or flank of the enemy. Unless you have the armor upgrade, you will get blown to smithereens in a matter of seconds if you attack head-on, without Allies protecting the flanks.

Yay for my contribution to the topic! Gimme a priizreashh.

12) Always consider your weapon of choice according to your role in your team/squad and your location on the map. For example, an engineer with a shotgun and anti-tank mines on the attacking end won't do you any good. On the other hand, on defense, this kind of tactic may or may not work, depending on the situation.

13) As a recon, your primary role is reconnaissance aka spot dey motherhubbards from across the map with your scopey-scope. While you are given a sniper rifle, your primary role is to infiltrate the enemy and attack from a position that would benefit your team. Mortars and C4 should always be utilized in a round, whether it's to take out a stationary AT or demolish a building full of enemies.

That's all I got for now. D:

14.)

• noobs like me should stick to being a medic, its fun, you get a lot of points, and ah yeah its cool too running with paddles, zapping 'em in the face,

• oh yeah and you can be the tide holder if you're playing in a rush maps, believe me

• LMG's dont quite work for me i dont know if its the lag or the way i handle the gun, i choose SAIGA shot gun, its good for clearing buildings, CQC, and pushing with squad

• 
  Always, ALLLLLLWAYSSSSS try to drop health kits when your team mates are trying to hold a ground (EX. hiding behind a big rock etc.) while they're being mowed by enemies, try to give them cover fire, randomly shoot your LMG where the enemy is firing from, so that your team can move

thats all from me naw