StarDrive 2 achievements

Win a ground combat as a race with the Timid trait

Control enough sources of Spice to gain the exploitation bonus

Successfully threaten a race into giving you something they wouldn't have otherwise given you

Have at least 50 fighters deployed at the same time in a battle launched from the strategy map

Unleash the plague bomb on a planet

Eliminate a planetary population through orbital bombardment

BUT IT RAINS DIAMONDS. Colonize a world with the Diamond Rain special

Use transports to move 10+ citizens (across any number of games) from one colony to another

Colonize a Gaia planet

Use espionage to plant a mole in another empire

Control 8 or more colonies