The aim of Power Struggle is to destroy the enemy headquarters, a task which is achieved using nuclear weapons in the form of a TAC Tank, a TAC launcher, or by using a Singularity Tank, which generates a temporary black hole in the target area. To gain access to nuclear or singularity weapons, you must first capture the "prototype facility" which is used to make them, and then use the alien crash sites which feed the facility with energy necessary to build up enough energy to build weapons of mass destruction.
One must earn Prestige Points, attained by killing enemies and taking over Bunkers, Power Stations, and Factories, to buy weapons and vehicles, including any of the aforementioned superweapons. Some of the weapons available in the game are machine guns, pistols, a shotgun, a precision rifle, ammo, a rocket launcher, explosives, and a gauss rifle (a sniper-type weapon able to kill another player in one shot)."
It would be nice to scavenge for your own weapons. Come on Crytek, we know it can be done.