This game is a lot fun for people who enjoy sniping in every other FPS game. But it lacks in terms of upgrades & MP.
The Campaign mode is quite okay with decent story and environment but fails to immerse into the story. There are few noticeable things like heartbeat monitor, breathing meter, but it doesn't affect that much of the gameplay. The game also shows the unique relationship between a 'spotter' and a sniper, but not that deep.
Multiplayer is not that special. Just one mode - Team Deathmatch with few maps.
The game could have been more fun with customization options, immersive storyline and different modes in multiplayer.
To conclude, it's a one time play, not more than that.