Jumper Jon Achievements Here is the full list of all 12 Jumper Jon 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 LimboIntroduction finished! Skull LordSkull Lord defeated! Collection15 memories unlocked! LeviathanLeviathan defeated! Collection 226 memories unlocked! MammhonMammhon defeated! Collection 338 memories unlocked! BelphegorBelphegor defeated! Collection 450 memories unlocked! AshmodeuzAshmodeuz defeated! Collection 562 memories unlocked! LucipherLucipher defeated!