Here is the full list of all 54 Ashes of the Singularity: Escalation achievements.
Defeated an unfair-teams skirmish against Insane AIs with no human help
Reached Legendary status in multiplayer. #respect
Reached rank 5 in ranked multiplayer
Joined a ranked match
Won a game after your Nexus was dealt critical damage
Win a match after a teammate has lost. Thanks a bunch, pal.
Won the Ascendancy Wars for the Post-Humans
Completed the eighth Ascendency mission
Won a six-player match in the Ascendancy Wars
Conquered Silgul
Conquered Artorius
Conquered Falness
Completed the sixth Ascendency mission
Completed the fifth Ascendency mission
Conquered Roceda
Completed the fourth Ascendency mission
Completed the ninth Escalation mission
Completed the eigth Escalation mission
Completed the seventh Escalation mission
Completed the sixth Escalation mission
Completed the fifth Escalation mission
Completed the fourth Escalation mission
Completed the third Escalation mission
Completed the second Escalation mission
Completed the first Escalation mission
Completed the third Memories mission
Completed the second Memories mission
Won a 3+ player free-for-all game as Substrate
Own 10,000 radioactives
Won a skirmish against unfair teams
Reached level 5 with a Dreadnought
Fielded 30 units of bombers at once
Lost a skirmish game
Won a match on victory points
Won a skirmish game as the Post-Humans
Didn't even sweat wasting 3,000 metal in a single match
Watch a game as an Observer
Won a match by destroying all opposition
Won a skirmish game as the Substrate
Won a match without wasting a single resource
Own 10,000 metal
Completed the first Memories mission
Upgrade a building
Completed the third Ascendency mission
Complete the second Ascendency mission
Completed the first Ascendency mission
Completed the Tutorial
Reached level 10 in any global upgrade
Called in orbital support
Fielded 1,000 Logistics worth of units
Stomped the comp with human teammates
Stuck around to the bitter end in a multiplayer loss
Won a skirmish with a handicap
Defeated an unfair-teams skirmish against Insane AIs with a fellow human fighting at your side