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