Hello visitor! A note about the contents of this wiki: Barotrauma is a game with several years' worth history as a free-download open source game, and this wiki has been written primarily based on this legacy version. As such, not all content is relevant to the Steam release. So please wait patiently as the contents are updated, and feel free to contribute new information once the Steam version of Barotrauma is released!
Weapons are Items (or, in the case of the Railgun, installation) whose primary use is to damage opponents. As items, weapons can be purchased in Barotrauma through the in-game shop (again, with the exception of the Railgun, which is in fixed position in the submarine). In addition to doing normal damage, some weapons can also cause bleeding or stunning.
Weapons can also use a different item for ammunition, which needs to be purchased separately inside the in-game store.