Barrel Launcher

The barrels are the whole weapon. They fall like thrown objects, bounce, then detonate on contact or when their fuse runs out, and a barrel that has bounced at least once hits considerably harder than one that connects straight off the launcher. Firing directly at something in front of you is the worst way to use it.

So aim at the ground short of your target, or at a wall behind it. Enclosed spaces and the boxed arenas people build for invasions suit it far better than open sky, where a missed barrel just sails off and expires.

The blast covers a wide square, so packed groups take it much better than single targets. It uses no ammunition at all, so you can hold it down through an entire event without thinking about supply.

Barrels can bounce a surprising distance upward, and they do not care whose feet they land near. They also apply almost no invincibility time on hit, so anything standing in a cluster of them eats every explosion in sequence.

It came over in a crossover with Dead Cells, where the same weapon crits when its barrels bounce off a wall. The distillery its tooltip mentions is where you find it in that game.