Here is the full list of all 15 Empires Of Creation achievements.
Explore every star in the galaxy
Have negative relations with every empire
Triumph in a battle where your odds of winning are below 25%
Destroy all other empires
Accept an objective from another race
Have 2 objectives from empires that are at war with eachother
Finish the Tutorial
Colonize your first Capital
Start your first Expansion Colony
Lose one of your own ships through stupidity
Destroy one of your own ships
Upgrade one of your ships to the highest tier
Travel over 3 light years
Kill a Tier 3 ship with a Tier 1 ship
Obtain an almost impossible large number of objectives.... Seven