Sniper elite 2 has certainly come on since sniper elite 1.
The game play is very similar to the first with the added benefit of better graphics and sound, but with an added 'cool...I LIKE THAT!!!' touch.
They have added a very unique camera style. Like all slow mo bullet time games, the camera generally follows the bullet spinning until it reaches its target. However, in Sniper Elite 2, there's a cool twist.
The bullet goes into slow mo, and upon hitting its target the camera goes into an X-ray mode. You see the round penetrating its unlucky target, crunching the bones and splicing the lungs/muscles as its goes, only to fly out the other side tossing through the air due to the impact of the target. A bonus shot being that it is entirely possible to hit multiple targets in one shot providing the second target stands near behind.

Other good features of the game:
Having to shoot at time intervals when loud noises occur to cover the sound of the shot.
Laying mines next to corpses to booby trap bodies.
Laying trip wires and throwing rocks to lure the enemy into walking into them.

The online multiplayer system is something to improve on. It's a starting base for Sniper Elite 3 but don't hold hopes for this version being great online.
If you buy the promotional version you can redemption codes to downloading the hitter addition.

Overall, a good game and fun to play with some mates showing of your skills. My tip. TURN THE SOUND UP. makes the shot all that much better.

Hope this little review helps.
Enjoy the game!