For the keybinds, you have :
--To move over a small barrier (like some of the small ones in Montignac) when you have your weapon aiming -while standing-, leave the TURBO key pressed (the turbo key is the one you press when you will sprint) and press the MOVE BACK key.
--To climb over an obstacle (like a wall or a higher barrier in Montignac, or a wall surrounding a military base that can be found in many places) , put yourself in patrol mode (press Weapon on Back in the action menu) then leave the TURBO key pressed and press the MOVE BACK key.
--While Standing with your rifle aiming, leave TURBO key pressed and press MOVE LEFT or MOVE RIGHT to LEAN to the right or the left.
--While Kneeling with your rifle aiming, leave TURBO key pressed and press MOVE LEFT or MOVE RIGHT to LEAN to the right or the left.
--While being Prone with your rifle, leave TURBO key pressed and press MOVE LEFT or MOVE RIGHT to ROLL to the right or the left.
Works for when you have a pistol too, though i don't remember if i released a beta with the pistol anims, i have too much things in the work to remember my beta releases.
--When you are running or sprinting, by default you have the weapon low, but "tap" the FIRE button of your mouse and you'll move your weapon up allowing you to shoot while running and sprinting.
Notice that shooting while running obviously lack of precision as you can imagine, and shooting while sprinting would need an insane amount of luck to land a hit.
When you shoulder an AT launcher, note that you can walk, run and sprint, unlike with the default anims that have you stuck with walking only.
But i have not found any ways to configure kneeling and going prone with the AT shoulder like you do with rifle and handguns.
--But you can do it, when you are not moving and have the AT weapon shouldered, leave the TURBO key pressed and press the MOVE BACK key, your soldier will go prone. (Must hold TURBO and MOVE BACK keys to hold position)
--Now when you have the AT weapon shouldered, first press whatever key that switch your speed to WALK, then press MOVE BACK key and you will kneel with the AT weapon. (Must hold MOVE BACK key to hold position)
Or vice-versa, i am not too sure which way it is for the kneel or the prone + AT Weapon.