Thunder Age Achievements Here is the full list of all 6 Thunder Age 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 The BeginningBeat the first level Hexagon builderBeat the second level UpgraderBeat the third level On your ownBeat the fourth level CompleteBeat the fifth level FlawlessBeat all levels with three stars