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