Here is the full list of all 18 BlackChain achievements.
Finish the Mars Launch Base mission
Finish the Titan Orbit mission
Finish the Kraken Shore mission
Finish the Moria Montes mission
Finish the Titan Canyon Mission
Finish the Athena I mission
Finish the Kerberos Station mission
Finish the Mordor Macula mission
Finish the Helium Caverns mission
Finish the Space Elevator mission
Finish the Gates Plateau mission
Finish the Tycor Mainframe mission
Finish the Moria Montes mission without losing a unit
Finish the Gates Plateau mission without losing a single Attila walker
Finish the Helium Caverns mission before Stellar United gets 1000 points
Win a standard skirmish game
Finish the Kraken Shore mission in less than 15 minutes
Finish the Mordor Macula mission without letting a cargo vehicle escape