Planet Nine Achievements Here is the full list of all 17 Planet Nine 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 Faulty landingComplete main mission 1 Town under fireComplete main mission 2 Find the ControlComplete main mission 3 Gain ControlComplete main mission 4 Final ControlComplete main mission 5 Communication breakdownComplete main mission 6 The TruthComplete main mission 6 Reaching the starsComplete Main mission 7 Striking backComplete Main mission 8 Long way downComplete Main mission 9 Long way homeComplete Main mission 10 SovereignComplete Main mission 11 The GauntletComplete the Gauntlet Halfway thereBrought a skill to level 4 Maxed outBrought a skill to level 8 Supreme itemupgraded item to max level A whole new mechChanged locomotion on mech