|Damage Per Hit||
The Plasma Beam is functionally equivalent to the Quake's Thunderbolt that it is only found on Ground Zero from Quake 2, in that it is essentially an extremely powerful sustained hitscan Weapon. The only notable differences between the two are that the Plasma Beam causes a fair amount of knockback and has a practically unlimited range, unlike the thunderbolt's limited range.
Energy consumption is pretty high, so make sure you keep the beam on the target. Do not use on weaker enemies - it's a waste of ammo. The Plasma Beam can be very useful against Gunners, Medics, Parasites, Stalkers, Berserkers, Iron Maidens, Flyers, Technicians, Icaruses and Turrets and more powerful foes, such as the Medic Commander, Tank, Tank Commander, Daedalus, and the Gladiator. You should also make sure to save some of your ammunition for bosses, such as the Carrier and the Black Widow Guardian.