Horror Nightmare Collection Achievements Here is the full list of all 6 Horror Nightmare Collection 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 Evil CrowComplete Evil Crow Forsaken PrisionComplete Forsaken Prision Pauls Lost RemainsComplete Pauls Lost Remains Haunted MineComplete Haunted Mine Terror GnomeComplete Terror Gnome Port To HellComplete Port To Hell