Here is the full list of all 27 Interplanetary: Enhanced Edition achievements.
Win a multiplayer match with eight players.
Outlive 7 AIs in one match.
Win 50 online multiplayer matches.
Win 25 online multiplayer matches.
Destroy 100 cities over any number of games.
Win 10 online multiplayer matches.
Win 5 online multiplayer matches.
Beat the Impossible AI.
Win 25 single player games.
Win 10 single player games.
Have your planet run out of material.
Hit yourself with a weapon fired from your own planet.
Win a match with less than 200M population left.
Unlock all technologies.
Fire all the superweapons during the same turn.
Fire Asteroid Diversion super weapon.
Grow five cities to their maximum populations.
Build 200 buildings on your planet.
Have 35,000 material in stock.
Defeat two enemy planets in one turn.
Produce 15,000 Energy in one turn.
Fire Solar Laser super weapon.
Win an online multiplayer match.
Win a multiplayer match with at least two players.
Win a multiplayer match with at least four players.
Fire Nuclear Missile super weapon.
Defeat an enemy planet.