Stray Blade

This is potentially missable as it requires you to talk with Boji in the Cavernous Respite. Talking with Boji isn't always required to continue the story as sometimes it's just extra lore dialogue. However, for this achievement you will enter the Cavernous Respite and see a large black and orange pillar with a waterfall in the background. Run close to the pillar and Boji will want to talk. As soon as the conversation is over, this achievement will unlock.