Bad and boring.
The whole point of sniping games is to kill targets, not to go and find a way to get rid of a guard in a non violent way. The sniper scope moved slower than the mouse, so that cause a the game to slow down, a lot. The music was annoying, and puzzles are not made for sniping games. And finally The puzzles were just horrible and boring. The game would have been a hell of a lot better if all of these things were corrected.