I’ve lost count of the amount of times I’ve seen a sniper hang his body out of a window or off a ledge, and get a million bullets bored into him. If you’re sniping, make sure that your body is at least partially concealed. If you’ve found a nice window to snipe from, try and stay as far back in it as possible, and have only a small gap to snipe from. In this way, you become harder to spot and you’ll be more accurate since you’re providing cover to only a small area.
Also, when you kill someone in the game, his camera moves in the direction you are, giving him a clue about your location. So, if you’ve killed 3-5 people from the same spot, it’s a good idea to relocate yourself and find another spot to snipe from. These sniping spots don’t always have to be in windows or on higher ground. Try using long corridors that are frequently traveled by the enemies or other such places at times. Keep experimenting with different spots and it’ll definitely pay off.
There are two types of grenades in the game – Fragmentation (Frags) grenades and Rifle grenades. Both of these take about 5 seconds to detonate, giving the enemy plenty of time to run away from them. So while using frags its important you know how to 'bake' your nades. When you press down and hold down the attack key while the grenade is selected, you waste a few of the 5 seconds it takes to detonate. This is known as baking grenades. So, if you time this right, you can throw a grenade that explodes in mid-air, even before the enemy gets a chance to retreat. Be sure not to hold the nade for too long, else it’ll blow up in your hand (Look Ma ...No Hands!), killing you.
Rifle grenades are slightly more versatile than frags. They’re only available to the Rifleman class, as they get fixed on your rifle, allowing you to shoot them over long distances. You should make use of the force they’re shot out with and bounce them off walls to kill unsuspecting foes. Another way to use them is, shoot one at your feet, Press ‘E’ to pick it up, and then throw it. This has the same effect as baking a frag, as it wastes a few seconds before detonation. You can even pick up enemy nades using this method and throw it back at them.
Nice tips for begginers.Good to see this awsome game gaining in popularity in india. 
