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