| Achievement | How to unlock
|
|---|
| Botanist | Collect every seed expansion pack.
|
| Break On Through | Unlock the Drill Gun.
|
| Double Your Fun | Unlock the Dual Magnums.
|
| Get Used To This | Suffer your first Game Over.
|
| It Always Comes Back | Unlock the B-Uzi.
|
| It's Fun To Say | Unlock the Back-A-Pack-A-Pult.
|
| Just Give Up | Get killed by the final boss.
|
| Patriot | Unlock the Torpeagle Rifle.
|
| The Easy One | Start the game.
|
| The Final Stretch | Arrive at the ancient temple.
|
| Thy Will Be Gun | Defeat the aliens and save all the guns.
|
| Wrong Choice, Bub | Surrender your guns and embrace peace, you sissy.
|