The chainsaw is a quick-kill weapon, capable of destroying powerful enemies like the Hell Knight and Cyber-Mancubus in a single well-placed hit. The weapon is, for the first time, realistically limited by using fuel as ammunition, in order to balance its lethality and to provide a mechanic to encourage its use. Killing enemies with the chainsaw causes a massive drop of ammunition for other weapons, making it a key way to restock supplies. Stronger enemies require more than one unit of fuel to kill with the chainsaw.