Defend yourselves against some bad company. You stand completely surrounded by two kinds of bad guys. Push them back with four weapons: a handgun, 2 kinds of shotguns, and a machine gun. Switch between them in real time to best suit your needs by pressing the 1, 2, 3, and 4 keys. Aim with the mouse and fire with the left mouse button. Use the spacebar to reload. You're surrounded from all sides, so use you're the green radar to the right of the screen to see where the enemies are and, most importantly, how close they are to you.