- never reload when running around a corner, unless you know for a FACT that no one will be there i.e. when in your base, this is usually what caused most of my deaths in BC 2 and BF 3 at the start, such an obvious thing yet such a common occurence with many players. Try to reload before you run out of ammo too otherwise the reload is longer then
- when shooting out windows, don't go right to the window, stay back and try to stay in the "dark" parts, not the well lit areas and when dealing with people who are shooting out the windows, if possible, destroy the walls, heck of a lot easier to shoot people then
- never run right in the open, always use cover and always stick to a wall
- try to take on your targets when you are behind something and never peak out any more than required, why give them more of your body to shoot at? You want to make it as hard as possible for them to shoot you
- always aim down the sight when going around corners, you will be ready straight away if anyone is around the corner
- use the mini map if available, this is extremely useful, all enemies that are firing their guns (which aren't suppressed) will show up on the mini map thus giving you their positions
- if playing as a medic, try to keep the medic pack and always throw it at a corner before you start a firefight rather than taking 50% damage and then throwing it.....
- try to join squads where the players all have different squad perks, that way you have all the perks as opposed to just 1 or 2 (since hardly any one changes them.....) and change yours to one that isn't been used!
- never hip fire unless it is in very close quarters and/or you are using the m5k, ump, p90 etc. with a laser sight
- fire controlled short bursts for long range shots when using assault rifles etc.
- don't move from your cover or go charging in unless the area ahead is definitely clear, you will just get killed 90% of the time
(could maybe get away with it more often when playing normal, but not hardcore)
- spot the enemy/hit q even when just scouting/looking around a corner as sometimes enemies will be spotted even when you aren't looking directly at them and you might not have seen them without the 3d spotting
- know when to use the correct class and certain unlocks i.e. if no one else is playing as recon AND using the SOFLAM on say kharg island on rush (and you are defending) then play as that class and plant the SOFLAM high up and manually control it (tell your team to use JAvs), this is the most important role on that map imo as you can spot every enemy that is trying to flank and most importantly the potential to take out the heavy armour plus heli and jet before they do serious harm. Not fun and certainly not rewarding but it is vital if you want to win that round without losing the first base. Likewise for certain maps like metro, use smoke m320 as it means you can push past the frag, rpg, LMG spam
- use the environment i.e. on metro and seine, if you have the RPG/SMAW or M320, don't just fire it at your enemy, fire it at the wall above them and take out more than just 1 person
- if you are playing on some maps on the TDM mode, when you peak out of cover to shoot someone but can't hit/kill him due to suppression etc. don't peak out from the same corner/place again as he will either be there waiting for you to pop your head back out or will move somewhere else and maybe even try to flank you (not as likely)
- when suppressed, don't try to peak out and kill the guy (for medium/long range) as your aim/accuracy will be crap, just wait till the blur screen goes away
- with tanks, try to shoot them in the back (less armour there) or sides as opposed to the strongest point, the front. iirc, if you shoot them in the back (in a straight line, not from an angle), then it only requires two rockets to destroy the tank (close up that is)
- if in the middle of a firefight up close and you run out of ammo in your main gun, switch immediately to your pistol, much faster that way