Red Obsidian Remnant Achievements Here is the full list of all 17 Red Obsidian Remnant achievements.Filter Achievement View View Image viewList view Sort by TrueSteamAchievement desc TrueSteamAchievement asc Achievement name desc Achievement name asc TSA Ratio desc TSA Ratio asc Gamers desc Gamers asc Steam order Date won desc Date won asc What are achievement flags? Click to find outApply A Valuable SoulThe first clearance of the 『Underground Prison』on the 3rd floor will unlock『The Corruption』on the 4th floor. Skillful AdventurerThe clearance of the『Hard』mode will unlock the『Nightmare』mode. UnlockDiffNightmareThe clearance of the『Nightmare』mode will unlock the『Limit』mode. DoyenSuccessful completion of six challenges in an adventure will unlock the 『Super Challenge Room』. EvildoingKill at least three adventurers in an adventure. CompanionHire at least three adventurers in an adventure. Devil's EyeThe clearance of『The Corruption』under『Nightmare』mode will unlock『Devil's Gift』. Adventure as a BeginnerSuccessfully passing trials of four floors under the 『Easy』 mode. Forward TravellerSuccessfully passing trials of four floors under the 『Normal』 mode. Soldiers in AbyssSuccessfully passing trials of four floors under the 『Limit』 mode. Nightmare Pandora Pandora Limit Execution Transaction The companion of the abyssClearance the『Limit』 in multiplayer mode Battle out of Hell The Supreme Soul