Killing Brabant in Kingdom Come: Deliverance II is usually the right call if the quest objective explicitly requires it, your Henry is built for combat or stealth, and you want a swift outcome with immediate rewards. However, sparing or neutralizing him is often smarter if you value extra quests, merchant or trainer access, lore, or a clean reputation, because dead named NPCs can permanently lock story branches. Consider your build, save before the confrontation, and check whether a non-lethal resolution pays equally well before you commit.