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