If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
You are a robot commando that has several types of weapons: gun, shotgun, submachine gun and sniper rifle as well as grenade, use it in case if there are a lot of enemies and all bullets are over. The robot is set the task to clear the Sector A zone (the destroyed city) from monsters and the most important to kill their boss. There are seven addictive and skill levels.
Arrows or keys WASD to move.
Mouse to aim and shoot.
F and left mouse button to throw the grenade.
Mouse wheel or 1-4 to change the weapon.