You must guide the scientists to one of the nearest underground tunnel. Keep an eye on your Scientist Monitor to see how many of them you still have to rescue. Hurry before the critters kill him, and keep an eye on the scientist's life bar. The yellow bar next to your selected weapen indicates your ammunition level. If you have no more ammo left, you can use your chain saw to cut your way through. Controls: Arrow Keys - Move Around Spacebar - Shoot P - Pause B, C, V, X or Z - Change Weapon