| Achievement | How to unlock
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| Active Denial System | Defeat 1,000,000 fieldrunners.
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| Aerial Madman | Destroy 500 air units.
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| Aerial Survivalist | Destroy 100 air units.
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| Base Major | Get to round 100 on Crossroads in Classic mode on Medium.
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| Baserunner | Get to round 100 on Crossroads in Classic mode on Hard.
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| Berzerker | Defeat 500,000 fieldrunners.
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| Blow 'em Up! | Fully upgrade a Missile Tower.
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| Boot Camp Complete | Get to round 100 on Frostbite in Classic mode on Easy.
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| Boot Camp Dominator | Get to round 100 on Drylands in Classic mode on Easy.
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| Boot Camp Junior | Get to round 100 on Grasslands in Classic mode on Easy.
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| Boot Camp Master | Get to round 100 on Skyway in Classic mode on Easy.
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| Boot Camp Senior | Get to round 100 on Crossroads in Classic mode on Easy.
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| Commander-in-Chief | Achieve 500 victories.
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| Crossroads Bronze | Get to round 100 on Crossroads in Extended mode on Easy.
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| Crossroads Gold | Get to round 100 on Crossroads in Extended mode on Hard.
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| Crossroads Silver | Get to round 100 on Crossroads in Extended mode on Medium.
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| Crystal Caves Bronze | Get to round 100 on Crystal Caves in Extended mode on Easy.
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| Crystal Caves Gold | Get to round 100 on Crystal Caves in Extended mode on Hard.
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| Crystal Caves Silver | Get to round 100 on Crystal Caves in Extended mode on Medium.
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| Crystal Clear | Get to round 100 on Crystal Caves in Classic mode on Easy.
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| Crystalrunner | Get to round 100 on Crystal Caves in Classic mode on Hard.
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| Cuts Like Butter | Fully upgrade a Laser Tower.
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| Daredevil | Get to round 150 on any map in Endless mode on Hard.
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| Desert Captain | Get to round 100 on Drylands in Classic mode on Medium.
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| Desertrunner | Get to round 100 on Drylands in Classic mode on Hard.
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| Diamonds are Forever | Get to round 100 on Crystal Caves in Classic mode on Medium.
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| Diehard | Play 75 rounds consecutively with 1 life.
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| Drylands Bronze | Get to round 100 on Drylands in Extended mode on Easy.
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| Drylands Gold | Get to round 100 on Drylands in Extended mode on Hard.
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| Drylands Silver | Get to round 100 on Drylands in Extended mode on Medium.
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| Field Corporal | Get to round 100 on Grasslands in Classic mode on Medium.
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| Fieldrunner | Get to round 100 on Grasslands in Classic mode on Hard.
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| Firecracker | Get to round 100 on Lavaflow in Classic mode on Easy.
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| Firewalker | Get to round 100 on Lavaflow in Classic mode on Medium.
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| FLAWLESS! | Achieve victory without taking any damage.
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| Frostbite Bronze | Get to round 100 on Frostbite in Extended mode on Easy.
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| Frostbite Gold | Get to round 100 on Frostbite in Extended mode on Hard.
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| Frostbite Silver | Get to round 100 on Frostbite in Extended mode on Medium.
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| Get off my Lawn | Fully upgrade a Shotgun Tower
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| Global Warmer | Fully upgrade a Flame Tower.
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| Grasslands Bronze | Get to round 100 on Grasslands in Extended mode on Easy.
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| Grasslands Gold | Get to round 100 on Grasslands in Extended mode on Hard.
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| Grasslands Silver | Get to round 100 on Grasslands in Extended mode on Medium.
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| Guerrilla Warfare | Buy and sell 20 towers consecutively.
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| Hard Worker | Get defeated 100 times.
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| HARDCORE! | Unlock all achievements.
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| Heavy Poison | Fully upgrade a Poison Tower.
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| I Love the Smell of Napalm... | Defeat 5,000 fieldrunners with the Flame Tower.
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| Ice Brigadier | Get to round 100 on Frostbite in Classic mode on Medium.
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| Icerunner | Get to round 100 on Frostbite in Classic mode on Hard.
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| Impenetrable! | Destroy 5,000 air units.
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| Insane! | Get to round 500 on any map in Endless mode on Easy.
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| Iron Fist | Score 500,000 points on any map in a single session.
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| It's Better to be Alive | Get to round 150 on any map in Endless mode on Easy.
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| Jelly Up! | Slow down 100,000 fieldrunners with the Goo Tower.
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| Lavaflow Bronze | Get to round 100 on Lavaflow in Extended mode on Easy.
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| Lavaflow Gold | Get to round 100 on Lavaflow in Extended mode on Hard.
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| Lavaflow Silver | Get to round 100 on Lavaflow in Extended mode on Medium.
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| Lavarunner | Get to round 100 on Lavaflow in Classic mode on Hard.
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| Lemming! | Get defeated 1,000 times.
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| Mad Scientist | Fully upgrade a Tesla Tower.
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| Manhattan Project | Fully upgrade a Mortar Tower.
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| Master Plan | Score 850,000 points on any map in a single session.
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| Medal of Honor | Unlock 50%% of all achievements.
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| Mow Them Down | Fully upgrade a Gatling Tower.
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| Mud on Your Boots | Get to round 100 on Mudslide in Classic mode on Easy.
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| Mudrunner | Get to round 100 on Mudslide in Classic mode on Hard.
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| Mudslide Bronze | Get to round 100 on Mudslide in Extended mode on Easy.
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| Mudslide Gold | Get to round 100 on Mudslide in Extended mode on Hard.
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| Mudslide Silver | Get to round 100 on Mudslide in Extended mode on Medium.
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| Natural Born Sniper | Get to round 100 on Mudslide in Classic mode on Medium.
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| No Mercy | Defeat 5,000 fieldrunners.
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| Nuclear Dawn | Defeat 15,000 fieldrunners with the Mortar Tower.
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| Nuclear Winter | Fully upgrade an Ice Tower.
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| Patience is a Virtue | Get defeated 500 times.
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| Precious Snowflake | Slow down 50,000 fieldrunners with the Ice Tower.
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| Purple Heart | Survive any map with only 1 life.
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| Sky Colonel | Get to round 100 on Skyway in Classic mode on Medium.
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| Skyrunner | Get to round 100 on Skyway in Classic mode on Hard.
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| Skyway Bronze | Get to round 100 on Skyway in Extended mode on Easy.
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| Skyway Gold | Get to round 100 on Skyway in Extended mode on Hard.
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| Skyway Silver | Get to round 100 on Skyway in Extended mode on Medium.
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| Slice Them Up! | Defeat 5,000 fieldrunners with the Laser Tower.
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| Slow Mow! | Fully upgrade a Goo Tower.
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| Solar Flare | Fully upgrade a Plasma Tower.
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| Statistic | Defeat 100,000 fieldrunners.
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| Strategic Genius | Get to round 250 on any map in Endless mode on Medium.
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| Super Volcano | Fully upgrade a Lava Tower.
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| They Keep Coming, I Keep Gunning | Defeat 25,000 fieldrunners.
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| THIS IS SPARTA! | Achieve 100 victories without losing any lives.
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| Time Flies | Get to round 250 on any map in Endless mode on Easy.
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| War Hero | Achieve 100 victories.
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| Warming Up | Score 100,000 points on any map in a single session.
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