Launches large explosive barrels that explode on contact with enemies, spikes, or after a short duration.
If a barrel bounces off a wall, it will deal critical damage when it explodes. Its velocity will be slowed and its fuse time is slightly increased.
Attacks from enemies can reflect the barrels, changing them to be able to hit you instead. If reflected again by the player they will inflict critical hits to enemies.
Rampart can be used to parry reflected barrels as they count as melee attacks.
Masochist can be used to lower reflected barrels' damage.
Items that can stun or freeze enemies can be used to prevent enemies from reflecting barrels at all.
Alternatively items such as Lacerating Aura can be used to re-reflect the barrels.
Notes
Barrels reflected by enemies have the following properties:
They count as traps and therefore their damage will be capped to 30% of the player's max health, or 10% with the Masochist mutation, although the player won't receive the speed buff.
They count as a melee attack, and therefore the Rampart can trigger its ability when this is parried.
A colorless version of this weapon will always be available in the Derelict Distillery. However, taking this weapon to the Collector will not unlock the blueprint for the weapon to be used in future runs. The only way to obtain the blueprint for the Barrel Launcher is by defeating Infected Workers.