In *Kingdom Come: Deliverance 2*, you'll encounter a diverse cast of NPCs, some friendly, others not so much. Determining their intentions isn't always straightforward. This guide focuses on the Wandering Drunk and what to do with him.
Kingdom Come: Deliverance 2 Wandering Drunk Location

The Wandering Drunk resides in an abandoned barn slightly north of Semine, off the main roads. While riding north, you'll encounter a herdsman who warns you about a hostile vagrant nearby.
Inside the barn's vicinity, you'll find a beggar NPC. He'll become aggressive if approached. Currently, there's no peaceful interaction; combat is unavoidable. Defeating him yields a gemstone ring, keys, and 2.7 groschen. The barn itself also contains lootable items.
What to Do With the Door and Chest Keys?

The game provides no backstory for the Wandering Drunk. He might be reminiscent of a similar beggar from the first game, a vagrant with no associated quests. It's plausible he's simply lost his home and family, and the keys are merely narrative details.
Many NPCs carry keys with no apparent use, suggesting the Wandering Drunk's keys serve a similar purpose.
That's all you need to know about the Wandering Drunk in *Kingdom Come: Deliverance 2*. For more game tips and guides, including curing food poisoning and romancing Hans Capon, check out The Escapist.