* RPG: He fires a rocket from his RPG which knocks his opponent down. * Grenade: He throws a grenade at his opponent. * Energy Shot: He gets out a Gravity Gun and blasts a sphere of energy at his opponent. * Pistol: He shoots his opponent with a pistol can be done rapidly. * Crowbar: Gordon Freeman swings his crowbar at the opponent two times. Instead of extraterrestrial monsters, this particular mission involves Gordon Freeman fighting monsters of the supernatural sort, as well as preventing Earthrealm from falling into the hands of the Outworld emperor, Shao Kahn. Freeman chose the employment opportunity and was shipped off to Outworld for a special mission. After killing their leader, Nihilanth, a mysterious man calling himself the 'G-Man' appeared to Freeman and gave him an opportunity to change his fate with two options, either death or jointing the G-Man's 'employment'. Freeman to save humanity from the intergalactic threat. During an incident at the Black Mesa center, an horde of aliens called Vortigaunts appeared from the realm of Xen attacking Earthrealm, leading Dr. Gordon Freeman recently graduated in Theoretical Physics with a PhD and became a worker for the Black Mesa Research Facility. Costume 1: Gordon Freeman's Hazardous Enviornment Suitĭr.