Mediocre. The doctor mission was terrible. Took 3 tries and I know the crosshair was dead-on. The satellite in mission 7 wouldn't break when I shot it the first 16 times, so I had to reload the game.
5/10
There has been an abundance of games such as this. Stick figure assassins with sniper. There are a few well made ones, and I'm sorry to say this is far from that.
There are more than the average amount of glitches on level 38 that are making it rather difficult and quite annoying. Other than that it's a great game.