Lesson Learned Achievements Here is the full list of all 24 Lesson Learned achievements.Filter Achievement View View Image viewList view Sort by Won first then 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 AllWonNot wonWinston ChurchillDefeat Winston Churchill. 02 June 2024 - Add a guideNapoleon BonaparteDefeat Napoleon Bonaparte. 01 June 2024 - Add a guideTeslaBuild your first Tesla. 01 June 2024 - Add a guidePope Innocent IIIDefeat Pope Innocent III. 01 June 2024 - Add a guideFifth gradeDefeat your first 1000 monsters. 01 June 2024 - Add a guideDragonBuild your first Dragon. 31 May 2024 - Add a guideGaius Julius CaesarDefeat Gaius Julius Caesar. 31 May 2024 - Add a guideBuilder masterBuild your first 100 towers. 31 May 2024 - Add a guideFourth gradeDefeat your first 500 monsters. 31 May 2024 - Add a guideHammerBuild your first Hammer. 31 May 2024 - Add a guideBuilder journeymanBuild your first 50 towers. 31 May 2024 - Add a guideTutankhamunDefeat Tutankhamun. 31 May 2024 - Add a guideLevel UPLevel up your tower. 31 May 2024 - Add a guideThird gradeDefeat your first 100 monsters. 31 May 2024 - Add a guideBoomerBuild your first Boomer. 31 May 2024 - Add a guideSpitterBuild your first Spitter. 31 May 2024 - Add a guideUpgradeBuy your first upgrade 31 May 2024 - Add a guideLucyDefeat Lucy. 31 May 2024 - Add a guideSecond gradeDefeat your first 50 monsters. 31 May 2024 - Add a guideBuilder apprenticeBuild your first 10 towers. 31 May 2024 - Add a guideFIrst gradeDefeat your first 10 monsters. 31 May 2024 - Add a guideSecond lessonSurvive the first wave. 31 May 2024 - Add a guideFirst lessonComplete the tutorial. 31 May 2024 - Add a guidePrickerBuild your first Pricker. 31 May 2024 - Add a guide