Here is the full list of all 18 Eufloria achievements.
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 Dark Matter Mode.
Gather five mines on an asteroid.
Gather ten flowers on an asteroid.
Complete the main game.
Attack an enemy asteroid and destroy 200 seedlings in the process.
Discover an asteroid using a flower or a mine.
Destroy ten enemy seedlings using a mine explosion.
Defend one of your own asteroids continuously for five minutes.
Send a flower or a mine over 50000 arbitrary distance units.
Attack an enemy asteroid and lose 300 seedlings in the process.
Complete "Protection" without destroying anyone else's trees.
Find over 700 of the lost seedlings in the game.
Battle for an enemy asteroid for ten minutes.
A pitched battle that lasts over 15 minutes and incurs 500 losses between all sides.