When striking opponents from behind, the Knife can prove a formidable weapon. 

This bow is not very useful unless equipped with Tek Arrows.

A very useful weapon. The Pistol still works good against enemies later in the game.

A extremely useful weapon. This weapon uses Ammo clips like the pistol, but fires in 3-round bursts.

One of the best weapons, the Shotgun can deck just about any enemy. If you find explosive shells, this weapon is ultimate.

A Shotgun with no reload time. What more could you ask for? This weapon is good against most bosses with explosive shells.

Your first explosive weapon, the Grenade Launcher can mow down groups of enemies easily. With a small blast radius, you must back up when firing this weapon.

Don't underestimate this weapon. The Pulse Rifle fires high energy plasma bolts. These bolts hurt greatly. Great against bosses and a great long-range sniper weapon.

My personal favorite, the Mini Gun is one of the best weapons you will find. It hurts like one pistol shot from each bullet. It carries 500 rounds, and reloads by the box.

Another energy cell user, the Alien Weapon is one of the strategic weapons in the game. On the initial blast of the weapon, it does minimal damage. About 2 seconds later, a huge explosion occurs.

Fires four rockets which swerve in different directions. This weapon only carries 20 rockets, so make sure to pick up all rockets on your way.

Once again an energy cell user, this weapon basically freezes your enemies. Seconds later they blow up. Holding down the fire button charges it making it's impact radius bigger.