This weapon can instantly kill almost any enemy, including houndeyes, vortigaunts, bullsquids, Marines and Assassins. Revolver can be easily utilized in situations where pistol or shotgun might be impractical or inaccessible. Use them when trip mines seem too impractical. I don’t know they’re just… explosives, a bit harsher than grenades. Use them to kill Marines and Assassins scouting the area. Trip mines are pretty much just grenades, but mounted onto a wall. What a useful weapon, but can tripmines compete with them? (see the next section). You’ll need them in “We’ve got hostiles!” to disable the turrets (this can be done with other weapons as well, but grenades are the most practical) and “Blast Pit” to pacify the Tentacles. Grenades are powerful explosive weapons that can be used to kill Marines from a safe distance (or any other enemy in general, especially in large groups) as well as the Gargantua, only bulletproof enemy in the entire game (if you don’t count tanks as enemies. Even if you can’t see the marines, hand grenades can! (see the next section). Aim for the head as much as possible, make sure to fire in small bursts for maximal precision (this thing has a lot of recoil). Grenades can also be used to quickly kill alien grunts and female assassins. It’s perfect for killing HECU Marines its primary fire allows you to quickly and safely fend off smaller groups of soldier, as for the larger groups though, you’re gonna have to use the secondary fire (grenade launcher), especially if they’re dispersed across the area. If you ever want to beat Half-Life you’re gonna need this gun. I wouldn’t recommend you to use it against the Marines though, for that we’re gonna need the submachine gun/assault rifle (see the next section). Use the secondary fire only against the stronger enemies, such as bullsquids and vortigaunts. Even though it’s obtained quite early, it can easily kill many enemies from the game houndeyes, vortigaunts, bullsquids, barnacles and headcrabs being the easiest targets. Shotgun is by far one fo the most useful weapons in the game. It wouldn’t work very well for the Vortigaunts though, for that you’ll need a shotgun (see the next section). If necessary, you can use them against houndeyes and bullsquids as well. As I mentioned in the last section, pistols can be used to terminate headcrabs from a safe distance.

Half life gauss gun