Unlocking the Leave No One Behind achievement in Baldur's Gate 3 is one of the most rewarding challenges for completionists. This trophy requires players to protect and rescue every tiefling refugee across all three acts of the campaign. Because a single wrong choice or missed encounter can invalidate your progress, following a careful step-by-step approach is essential.
Essential Act 1 Decisions at the Emerald Grove
Your journey begins in Act 1, where early interactions determine the survival of several key refugees. You must convince Rolan and his siblings to remain in the grove to protect the refugees during their upcoming trek. Additionally, intervene to save Arabella from Kagha's snake and rescue Mirkon from the harpies along the secluded beach.
Protecting individual tieflings like Nadira from the bugbear assassin is equally critical to maintaining a clean record. Rather than triggering a massive assault on the grove, defeat the three goblin leaders directly inside their camp. Taking out the leadership ensures the refugees can safely depart toward Last Light Inn.
Navigating Act 2 and the Shadow-Cursed Lands
Upon arriving in Act 2, focus immediately on securing the Last Light Inn against incoming threats. You must defend Isobel during the tavern assault to prevent the surrounding tieflings from turning into undead creatures. Shortly after, venture into the shadows near Reithwin Town to save Rolan from deadly shadow fiends before he perishes.
Infiltrate Moonrise Towers prison to orchestrate a safe break-out for the captured tieflings and gnomes. Ensure you free Zevlor from his pod inside the mind flayer colony before concluding the act's final boss encounter. Tracking your progress through a BG3 Quest Walkthrough helps ensure no critical steps are missed along the way.
Finalizing the Rescue in Act 3
Reaching the city of Baldur's Gate marks the final stretch for securing this achievement. Check in on the surviving tiefling refugees scattered around Rivington and the lower city areas. When confronting Lorroakan in Ramazith's Tower, ensure Rolan sides with your party and survives the encounter.
During the final battle for the city, avoid calling on Zevlor's allies as summoned units to prevent accidental casualties. Once the brain is defeated, the achievement will unlock if all rescued tieflings remained safe throughout the game.
