Here is the full list of all 20 Eufloria HD achievements.
Complete the main game.
Complete "The Centre Cannot Hold" within 60 minutes.
Send a flower or a mine over 50000 arbitrary distance units.
Complete "200" without any of your own trees being destroyed.
Find over 700 of the lost seedlings in the game.
Defend one of your own asteroids continuously for five minutes.
Gather ten flowers on an asteroid.
Discover an asteroid using a flower or a mine.
Attack an enemy asteroid and lose 300 seedlings in the process.
Gather five mines on an asteroid.
Terraform an asteroid to maximum resources.
Destroy ten enemy seedlings using a mine explosion.
Land a beacon seed on an enemy asteroid.
Complete Dark Matter Mode.
Complete Story Mode in under ten hours.
Complete "Protection" without destroying anyone else's trees.
Attack an enemy asteroid and destroy 200 seedlings in the process.
Battle for an enemy asteroid for ten minutes.
A pitched battle that lasts over 15 minutes and incurs 500 losses between all sides.
Record all of the Ancient Artifacts.