Only shoot when you have a high probability of a hit, every time you fire your weapon, you give your position away.
Waiting and looking for movement, listening for the enemy will keep you alive.
Run from cover to cover, staying out in the open will get you killed.
If you're going to move, move quickly.
Prone is your friend. I sprint dive to prone as a matter of course.
To add to this, when you go from cover to cover and notice someone is shooting at you, don't sit still at that spot and thinking you can pop out to shoot back, because they will be expecting this. Back track back the way you cam and then advance in another direction.
Example:
If you are coming around a building with a fenceline and bullets smack nearby you, crouch, turn back around the building and approach from the other side. You usually will find the guy shooting at you still aimed at where you were, waiting for you to pop out, thus an easy kill for you.
As a rifleman, do not lead the charge into a conflict. Let the guys with the SMG's and such do the dirty work.... provide them with cover fire. As they advance, the enemy will be mostly focused on them, thus gives you a couple of free seconds to pop out and find the enemy for a few kills.
Relocate, relocate, relocate.... do not stay in one spot for too long because eventually you're going to be found and either get a bullet in your face or a grenade in your crotch.
If you keep dying over and over, keep trying different areas of approach. Don't take the normal routes everybody else does.....
and this may sound a bit odd compared to everything else I have said, but as a rifleman, you sometimes need to take some risks.
That means running out in the open to get to a better spot.
When running out in the open, don't go in a straight line, but zig zag and make random turns so you're harder to hit.
Even though you don't have a bayonet yet, you can still club enemies with your weapon in close combat.... When you are rushing a building, trying to shoot people isn't going to be very wise since you only have one shot before you need to rebolt..... hold down your alternative attack to keep the rifle charged up for a club, run in (take risks) and get in the face of the enemy and smash it inside out..... then shoot the guy next to him with a hip shot.... then get ready to butt smash the next guy (or the guy you missed with that shot)
All in all, the most important thing is not to go into a fight alone.... stick with some other team mates. More firing power amongst your group, more targets for the enemy to focus on rather than just yourself.
And don't forget about your grenades..... for accurate throws, aim using the middle finger on your left-extended hand and raise up or down based on the distance you need to throw.
In previous RO's the index finger was what you used to aim with, but doing that in RO2 and tossing at a window using your index finger will just make it bounce off the edge of the window and back into your lap, killing you and everybody around you.
Oh... and one more thing.... your rifle has a lot of penetration power for most of the materials in every map. If you have some idiot shooting out of a window & taking cover or hiding around a doorway, aim for where he is and shoot.... unless the wall you are shooting at is concrete or thick brick, your bullet will go through and kill them. Try it on such maps as Barracks or Apartments where other riflemen and MG's like to camp out. Quick easy kills.
New players might complain that you're hacking or something, but that's their mistake for thinking some sticks and wallpaper would stop a bullet.
Go to flanks, kill em from range, spread the terror of one single bullet. The enemy has to think you can and will kill them anytime they cross that stretch of land/forest/rubble.
