What kind of an army man would Sheppard be without a dangerous looking combat knife at hand? While you won't use it often, it is useful for taking out head crabs with one swift slash when you are low on ammo.

A handy starting sidearm to carry around, the Eagle packs less of a punch than the Magnum from Half Life but carries more in the clip (seven shots) and reloads much faster. Activating secondary fire will enable a laser sight. Use it wisely though since enemies can see it just as well as you.

Replacing the zooming crossbow of Half Life is a military sniper rifle. As expected, it is best used by smacking the zoom button and taking off the left ear of any enemy before they can even blink.

SAW is short for Squad Assault Weapon, but it might as well be called that for its ability to cut through enemies like a saw through wood . A powerful punch and a solid rate of fire are balanced by a long reload time.