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