You can earn achievements in-game for doing certain tasks.
If you are a Steam player you will also get achievements in your Steam account.
All players can also see the earned achievements on they're player profile or check others profiles to see what acihevements they got.
There are right now a series of achievements you can win and that list will continue to increase in time while we add more.
List of current achievements:
Welcome Citizen - Awarded after joining the game
Finish of First Work - Awarded after finishing your first work
First Fight in Battlefield - Awarded after fighting for the first time in an international battlefield
Top Three in Battlefield - Awarded on being in the top three for an ended international battlefield
Finish of First School - Awarded after finishing your first school education
Found a Space Colony - Awarded after founding your first space colony
Upgraded to PRO - Awarded after upgrading your account to PRO membership
Some achievements may not appear in-game or on your Steam account if you've done the corresponding activity before that achievement was introduced to the game so you may need to redo that activity again to get them.