Sea of Thieves' second time-limited event, Gunpowder Skeletons, does exactly what it says on the tin.
Rare's swashbuckling pirate simulator has added skeleton enemies which carry gunpowder kegs. Naturally, you'll want to stop the buggers before they can get too close and blow up.
Blow them up first and you'll gain renown from the Bilge Rats - Sea of Thieves' new faction who look after the game's time-limited events. Like the last event, which saw you tracking down Skeleton Thrones, you'll gain Doubloons for your trouble which you can then use to buy limited edition outfit items or trade in for reputation with the game's permanent factions.