Agree with the mic suggestion. co-ordination is vital.
To get most of the higher recon weapons more easily use your shotgun if you arent used to sniping (you could argue that if your not good with a sniper then dont use, but if you want all the weapons its a good technique)
12gauge slugs are the way ahead for shotguns, on normal you litterally need to be sitting on their knee when you shoot them.
Mix it up, Try mixing the different perks as you might find light pack better than magnum ammo or body armour for example.
Explore EVERYWHERE on a map, you will get to know little shortcuts and ways in behind enemy lines so you can wreak havoc without getting shot to bits.
To get most of the higher recon weapons more easily use your shotgun if you arent used to sniping (you could argue that if your not good with a sniper then dont use, but if you want all the weapons its a good technique)
12gauge slugs are the way ahead for shotguns, on normal you litterally need to be sitting on their knee when you shoot them.
Mix it up, Try mixing the different perks as you might find light pack better than magnum ammo or body armour for example.
Explore EVERYWHERE on a map, you will get to know little shortcuts and ways in behind enemy lines so you can wreak havoc without getting shot to bits.