Weapons in Subterrain fall into two broad categories - melee and ranged. All weapons consume durability when used, but melee and ranged weapons differ in the other resources they consume.
Melee weapons consume stamina to swing, and prolonged melee combat will quickly leave West exhausted. Several mundane objects, such as Hammers, Wrenches and Crowbars, can be used as melee weapons, and two purpose-built weapons can be produced and enhanced via Research - the Baton and Knife.
Ranged weapons consume power with every shot, drawn from an equipped Power Pack, and also generate heat. Heat is stored and dissipated by the weapon's installed Heatsink. If a weapon overheats, West will drop it as it grows too hot to hold - which can be a lethal occurrence in combat. Ranged weapons are modular, and constructed from three parts - a Barrel, a Core, and a Heatsink. The Core used determines the type of weapon produced, as well as several core properties such as its damage, rate of fire and heat generation. Barrels influence critical chance, and Heatsinks influence maximum heat capacity and heat dissipation rate. Initially, West has access the four types of weapon core - the Pistol, the SMG, the Shotgun, and the Plasma Launcher. All weapon modules can be researched, leading to the production of improved versions.