Riddles Of The Past Achievements Here is the full list of all 31 Riddles Of The Past achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.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 Flag Filter All None 31 Offline Mode 31 Single Player 31 Main Storyline Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply Find a pendantFound heart shaped pendant Find a magnifying glassFound a magnifying glass Find a photo albumFound a photo album Find a posterFound an old poster Find a ticketFound a ticket Found a billFound a gas bill Find a newspaperFound a newspaper Find jack blueprintFound jack blueprint Find a menuFound a menu Find access keyFound access key Find a folderFound a folder with a card file Find a player badgeFound a player badge Find a player photoFound football player photo Find a dancer figureFound a dancer figure Find a light bulbFound a light bulb Find Clarck's ringFound Clarck's ring Find a filmFound a film Find a red bookFound a red book Find a chipFound a chip Find a burnerFound a burner StadiumRecall what happened on stadium KidnappingThey took Fred! RiversideYou came to the Riverside BartenterYou've met the bartender ProposalRecall the marriage proposal ThreatDiscovered an enemy BlueprintYou found a robot blueprint Crime historyCrimes history revealed AnabiosisTurned anabiosis capsule off DeceptionRemote control is lost Victory!Evil genius is defeated!