Using the mouse to control, press the space bar to open sight in order to shoot the enemy in the distance. the R key change cartridges, when you get more advanced AWP sniper rifle, change gun through the 123 keys . Game player can view the enemy position through the radar on the upper left corner. shooting the enemy head can obtain higher score, blindly sniper rifle can achieve double score; when the score reaches a certain time, you can get all kinds of upgraded AWP sniper rifle,so as to improve the shooting speed, increased magazine capacity.
If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).