Nightfall Secrets Achievements Here is the full list of all 21 Nightfall Secrets 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 Welcome to the NightmareStart the game for the first time. Teamwork Makes the Dream WorkComplete the game with all players surviving. Unstoppable NightmareComplete the game on Nightmare difficulty level. Betrayal in the DarkAbandon the team and escape alone. The SacrificeSacrifice yourself to save the entire team. Escape ArtistComplete the game in less than 10 minutes. Getting the Hang of ItReach Player Level 5 Seasoned SurvivorReach Player Level 10 Dark ExplorerReach Player Level 15 The VeteranReach Player Level 25 Nightfall EliteReach Player Level 30 Master of SecretsReach Player Level 40 The Whispered OneReach Player Level 50 True NightmareReach Player Level 60 The Shadow WalkerReach Player Level 70 Whispers in the DarkReach Player Level 80 Master of FearReach Player Level 90 Nightfall AscendedReach Player Level 100 Just Getting StartedComplete the game on Easy difficulty level. Feeling BraveComplete the game on Normal difficulty level. Fear No EvilComplete the game on Hard difficulty level.