Gemstone Keeper Achievements Here is the full list of all 13 Gemstone Keeper 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 ASCII CentipedeDefeat first boss. Great TarantulaDefeat second boss. One Head Becomes Three.Defeat third boss. Massive DamageDefeat fourth boss. FinaleDefeat fifth boss. Five Creature Kill StreakKill Five Creatures without getting hurt. Fifthteen Creature Kill StreakKill Fifthteen Creatures without getting hurt. Thirty Monster Kill StreakKill Thirty Creatures without getting hurt. Gemstone CollectorCollect 50 Unique Gemstones Gemstone HoarderCollect 100 Unique Gemstones Collect 'Em All!Collect Every Unique Gemstone. Up Your ArsenalPurchase every weapon and ammo type. One after another...Complete the boss rush.