Alien Investigator Achievements Here is the full list of all 9 Alien Investigator 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 Senior investigatorReach investigator level 10 Advanced investigatorReach investigator lvl 20 Expert investigatorReach investigator level 30 There's a Monster Outside My WindowFind your first alien completing an investigation. Hit 'Em Real HardComplete 20 investigations Voices on the walkie talkieUpgrade your walkie talkie to the maximum level. There Are No CoincidencesVisit the cornfield farm Master of dark lightUpgrade your ultraviolet light to the maximum level. Extreme radiationUpgrade your Geiger counter to the maximum level.