A genius Baldur's Gate 3 player has managed to complete the entire game without (directly) killing a single NPC, in a perfect example of the freedom offered by Larian's RPG.
In a recent video, YouTuber Proxy Gate Tactician outlined how they made it through an entire playthrough, barely dishing out any direct damage from the deck of the Nautiloid all the way to the Upper City of Baldur's Gate itself. The rules they imposed including not allowing the environment (fire, falling etc) to kill any NPCs, or talking any bosses into shuffling themselves off the mortal coil. They could, however, allow uncontrolled NPCs to do their dirty work for them, which will become important later on.
