Here is the full list of all 20 Eufloria HD achievements.
Complete "Protection" without destroying anyone else's trees.
Complete the main game.
Complete "The Centre Cannot Hold" within 60 minutes.
A pitched battle that lasts over 15 minutes and incurs 500 losses between all sides.
Battle for an enemy asteroid for ten minutes.
Attack an enemy asteroid and destroy 200 seedlings in the process.
Attack an enemy asteroid and lose 300 seedlings in the process.
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 five mines on an asteroid.
Discover an asteroid using a flower or a mine.
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.
Send a flower or a mine over 50000 arbitrary distance units.
Gather ten flowers on an asteroid.
Record all of the Ancient Artifacts.