Shotgun

Shotgun
The shotgun is the first weapon to be obtained (besides the starter Rapid Laser) and the second strongest weapon in the game. It has a wide range of damage and is a Hitscan weapon, meaning it inflicts its damage immediately after firing, as opposed to projectiles which have lag time between firing and damaging. It can destroy a whole group of Headcrabs in one shot, and takes 3 to destroy Vinebackers.