Monster Outbreak Achievements Here is the full list of all 40 Monster Outbreak 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 Beginner SlayerKill 100 monsters HunterKill 1,000 monsters ExterminatorKill 100,000 monsters Monster TrapperKill 100 monsters with structures Base BuilderKill 1,000 monsters with structures Fort KnoxKill 100,000 monsters with structures Experienced SwordsmanKill 500 monsters with your sword Battle Axe SlayerKill 200 monsters with an axe Bow SniperKill 500 monsters with a bow Hammer SlammerKill 200 monsters with a hammer Master of FireKill 1,000 monsters using fire towers Spin ClassKill 1,000 monsters using wooden spinners Old School Crossbow KillerKill 1,000 monsters using crossbows Cannon LoverKill 1,000 monsters using cannons DethronedKill the Slime King Rock SlayerKill the Golem NecromancerKill the Undead King Not Easily FooledKill the Trickster Invader DefenderKill 1,000 invaders Bird HunterKill 500 dimensional harpies Giant AssassinKill 500 devourer giants Visual ImpairmentKill 500 beholders ArachnophobiaKill 500 scorpions Master BuilderUnlock every structure FashionistaUnlock every character skin Animal LoverUnlock every pet skin CartographerUnlock all the maps Horror FanUnlock all undead maps VolcanologistUnlock all lava maps Flower EnthusiastCollect 10 ghost flowers LumberjackCollect 2,000 logs Rock CollectorCollect 10 magic rocks MinerCollect 2,000 rocks Eye SnatcherCollect a beholder eye HeatedCollect a fire stone SleetedCollect an ice stone YeetedCollect an electric stone RookieReach wave 20 on any map SurvivalistReach wave 50 on any map VeteranReach wave 100 on any map