Here is the full list of all 18 Eufloria achievements.
Gather five mines on an asteroid.
Discover an asteroid using a flower or a mine.
Attack an enemy asteroid and lose 300 seedlings in the process.
Send a flower or a mine over 50000 arbitrary distance units.
Destroy ten enemy seedlings using a mine explosion.
Complete the main game.
Complete Dark Matter Mode.
Gather 4000 seedlings on an asteroid.
Complete "200" without any of your own trees being destroyed.
Complete "The Centre Cannot Hold" within 60 minutes.
Complete the campaign in under ten hours.
Complete "Protection" without destroying anyone else's trees.
Find over 700 of the lost seedlings in the game.
Attack an enemy asteroid and destroy 200 seedlings in the process.
Gather ten flowers on an asteroid.
Battle for an enemy asteroid for ten minutes.
Defend one of your own asteroids continuously for five minutes.
A pitched battle that lasts over 15 minutes and incurs 500 losses between all sides.