Bought this game few years ago, love it love it. Lost count of how many times I have played it. On the basis of how much I enjoyed Sniper Elite I purchased another sniper game, I think called WW2 Sniper, absolute rubbish.
Perhaps the graphics are not as crisp and bright as some would like, but a mucky rubble strewn Berlin seems ok to me. You always have your sniper rifle and a silenced pistol with you, and can pick up machine guns and ammo from your kills. Limited ammo for your rifle, no more than 150 rounds.
Grenades, med kits, the odd anti tank weapon, and prob the most useful of all, the Tripwire Grenades. In some areas of the game you cannot survive without them. You definitely need them to cover your back.
Most of the time you are working on your own, though occasionally you are working with the resistance. But basically they tell you what they want doing and you go and do it.
They have a wonderful bullet cam, tracking your shot to its target. A good head shot gives you some satisfaction!
Its not all action all of the time, sneaky is a good description. Keeping your head down as you can hear the enemy closing in.
Buy it, its brilliant!