The first Sniper experience is a very bad one. Make no mistake: the game looks decent and there's a lot of emphasis on the sniping action which feels a lot of fun. The features section of the game's store page highlights the importance of weather, wind and how the bullet trajectory / drop can be affected by them. It's all good but just not enough to result in a good game.
Campaign is short and extremely difficult. While sniping is fun you are told exactly where to go and what to do. It is so heavily scripted that under no circumstances do you feel you should try it again. From time to time you are in the shoes of a soldier only allowed to handle rifles or SMGs. Fighting with these is very difficult. It has nothing to do with how these weapons work: the enemy can just easily spot you and shoot you down. This switching back and forth from the easy sniping and the very hard gunning sequences just makes the game unplayable.
In addition to this, I was unable to find any games online. Not that after the horrible single player I wanted any. Sniper Ghost Warrior is an original game: its creators knew a lot of people liked sniping so they developed a game with that in mind. It was just not executed properly. If they had taken the time to refine the campaign and completely get rid of the non-sniper weapons this would have easily been on top of the list of my favourite games.