The dead have begun to rise up from their graves to walk among the living once again... and the only thing that they're interested in is blood and brains so that they can make more soldiers of their seemingly invincible undead army. Down deep underground in the depths of hell it's all up to you to stop the madness. Don't expect that to be easy though - this is an incredibly challenging game that will require lightning quick reflexes, though don't get yourself thinking you can just do everything guns blazing... no, you'll want to utilize cunning and strategy if you truly want to succeed in this hectic fast paced blood soaked action game! Aim with the cursor by moving around your mouse, and click your left mouse button to shoot your weapon. Select your weapons one of two ways - either by using your scroll wheel, or using the 1 through 6 keys on your keyboard which will enable you to get direct access to the gun you need. Reload your weapons using the R key, or the space bar. Pause the game and enter the menu by pressing the P key.