MP7 (SMG1): Fully automatic, this gun is used by both the Combine and the Resistance.MK3A2 Grenade: A standard grenade that explodes a few seconds after being thrown.Their name is derived from the fact they launch into the air before landing and exploding. Hopper Mine: Mines that explode when a target gets too near.Emplacement Gun: Used by the Combine, this mounted pulse gun can be used to clear enemies quickly and efficiently however, it cannot be moved.The only sniper weapon featured in-game, the ammunition is less common, but it will usually kill less powerful enemies in a single shot. Whilst the projectile fired is very powerful, it is slow-moving and enemies will often move out of the way. Crossbow: A long-range weapon that fires red-hot steel rebar onto unsuspecting enemies.Bugbait: Collected from an Antlion Guard, these pods can be thrown to release pheromones, attracting Antlions which will kill any enemies nearby.However, the ammunition is scarce and it has a slower rate of fire. 357 Magnum ( Colt Python revolver): Powerful and accurate, this gun will often kill enemies quickly at close range. Crowbar: The most iconic weapon of the series a simple red crowbar that acts as a melee weapon which can be used to attack enemies or breakthrough various obstacles to continue throughout the game.In his struggle, he is joined by various allies, including fellow scientists, rebels, and friends (such as Alyx Vance) - all shocked to see him alive. Freeman is forced to battle against increasingly unfavorable odds in order to free Mankind from the Combine. Taking place in and around City 17, nearly two decades after the events of the first game, Half-Life 2 follows the scientist Gordon Freeman as he is thrust into an unfamiliar environment in which the aftermath of the Black Mesa Incident has come to bear fully upon human society.