| Base Major | Get to round 100 on Crossroads in Classic mode on Medium |
| Base Officer | Get to round 50 on Crossroads in Classic mode on Hard |
| Base Sergeant | Get to round 50 on Crossroads in Classic mode on Medium |
| Baserunner | Get to round 100 on Crossroads in Classic mode on Hard |
| Blow'em Up! | Fully upgrade a Missile Tower |
| Boot Camp Complete | Get to round 100 on Frostbite in Classic mode on Easy |
| Boot Camp Domination | Get to round 100 on Drylands in Classic mode on Easy |
| Boot Camp Junior | Get to round 100 in Classic mode on Easy |
| Boot Camp Master | Get to round 100 on Skyway in Classic mode on Easy |
| Boot Camp Senior | Get to round 100 on Crossroads in Classic mode on Easy |
| Cakewalk | Get to round 50 on Drylands in Classic mode on Easy |
| Crossroads Bronze | Get to round 100 on Crossroads in Extended mode on Easy |
| Crossroads Gold | Get to round 100 on Crossroads in Extended mode on Hard |
| Crossroads Silver | Get to round 100 on Crossroads in Extended mode on Medium |
| Cuts Like Butter | Fully upgrade a Laser Tower |
| Daredevil | Get to round 150 on any manp in Endless mode on Hard |
| Desert Captain | Get to round 100 on Drylands in Classic mode on Medium |
| Desert Commander | Get to round 50 on Drylands in Classic mode on Hard |
| Desert Lieutenant | Get to round 50 on Drylands in Classic mode on Medium |
| Desertrunner | Get to round 100 on Drylands in Classic mode on Hard |
| Diehard | Play 75 rounds consecutively with one life |
| Drylands Bronze | Get to round 100 on Drylands in Extended Mode on Easy |
| Drylands Gold | Get to round 100 on Drylands in Extended mode on Hard |
| Drylands Silver | Get to round 100 on Drylands in Extended Mode on Medium |
| Field Corporal | Get to round 100 on Grasslands in Classic mode on Medium |
| Field Private | Get to round 50 on Grasslands in Classic mode on Medium |
| Field Sergeant | Get to round 50 on Grasslands in Classic mode on Hard |
| Fieldrunner | Get to round 100 on Grasslands in Classic mode on Hard |
| Flawless! | Achieve a victory without taking any damage |
| Frostbite Bronze | Get to round 100 on Frostbite in Extended mode on Easy |
| Frostbite Gold | Get to round 100 on Frostbite in Extended mode on Hard |
| Frostbite Silver | Get to round 100 on Frostbite in Extended mode on Medium |
| Global Warmer | Fully upgrade a Flame Tower |
| Grasslands Bronze | Get to round 100 on Grasslands in Extended mode on Easy |
| Grasslands Gold | Get to round 100 on Grasslands in Extended mode on Hard |
| Grasslands Silver | Get to round 100 on Grasslands in Extended mode on Medium |
| Guerrilla Warfare | Buy and sell 20 towers consecutively |
| Ice Brigadier | Get to round 100 on Frostbite in Classic mode on Medium |
| Ice Colonel | Get to round 50 on Frostbite in Classic mode on Medium |
| Ice General | Get to round 50 on Frostbite in Classic mode on Hard |
| Icerunner | Get to round 100 on Frostbite in Classic mode on Hard |
| Insane | Get to round 500 on any map in Endless mode on Easy |
| Iron Fist | Score 500,000 points on any map in a single session |
| It's Better To Be Alive | Get to round 150 on any map in Endless mode on Easy |
| Mad Scientist | Fully upgrade a Tesla Tower |
| Make My Day! | Get to round 50 on Frostbite in Classic mode on Easy |
| Manhattan Project | Fully upgrade a Mortar Tower |
| Master Plan | Score 850,000 points on any map in a single session |
| Mow Them Down! | Fully upgrade a Gatling Tower |
| Now We're Talking! | Get to round 50 on Skyway in Classic mode on Easy |
| Nuclear Winter | Fully upgrade an Ice Tower |
| Purple Heart | Survive any map with only one life |
| Sky Captain | Get to round 50 on Skyway in Classic mode on Medium |
| Sky Colonel | Get to round 100 on Skyway in Classic mode on Medium |
| Sky Commodore | Get to round 50 on Skyway in Classic mode on Hard |
| Skyrunner | Get to round 100 on Skyway in Classic mode on Hard |
| Skyway Bronze | Get to round 100 on Skyway in Extended mode on Easy |
| Skyway Gold | Get to round 100 on Skyway in Extended mode on Hard |
| Skyway Silver | Get to round 100 on Skyway in Extended mode on Medium |
| Slow Mow! | Fully upgrade a Goo Tower |
| Strategic Genius | Get to round 250 on any map in Endless mode on Medium |
| That Was Easy! | Get to round 50 on Grasslands Classic under the Easy difficulty level |
| That Was Easy, Again | Get to round 50 on Crossroads in Classic mode on Easy |
| Time Flies | Get to round 250 on any map in Endless mode on Easy |
| Warming Up | Score 100,000 points on any map in a single session |
