Baldur's Gate 3 player uses 'barrelmancy' to explosively murder an Act 3 boss and avenge Karlach

pcgamer.com:

Barrelmancy, they're calling it. This is how one Reddit user discovered a way to get back at sweet, sweet Karlach's mortal enemy in Baldur's Gate 3. How terribly she was wronged, and how explosive her revenge will be. Here's how they did it. 

In case it wasn't clear, this article is going to talk about Karlach's backstory, so here be spoilers.

Somewhere down the line, toward the end of Act 2, you'll run into the Bane-worshipping politician Lord Enver Gortash. He and Karlach really don't get on, and understandably so, since he's the one who sold her to a devil.

If you've any compassion for your heart-achey Tiefling barbarian companion, you will resolve to destroy Gortash at all costs. You won't get to do that until you reach Baldur's Gate in Act 3, however, as he's one of the final act's main bosses. Even if you're not a Karlach stan (what's wrong with you?) you'll need to deal with him.

Looking down his list of features, Gortash is pretty lethal. He's a highly intelligent, highly dexterous enemy, with Dark Devotion, which gives him advantage on Charmed and Frightened saving throws. He has advantage against spells and other magical effects. You cannot disarm him. You cannot frighten him. And attempting to fight him in a room full of his Steel Watchers and other goons is generally considered a death wish. 

But there's nothing here to say he's explosion proof.

Having collected a stash of several thousand pounds of smokepowder, and more vials of Alchemist's Fire than you could shake a pitchfork at, Reddit user carpanaut posted their conclusion to the matter on the Baldur's Gate 3 subreddit.

All they did was stack the explosive barrels up around the brute, Lord Gortash himself, scatter the Alchemist's Fire around on the