Here is the full list of all 54 Machines At War 3 achievements.
Win 1 network multiplayer game
Win vs Newbie AI
Win vs Adaptive AI
Win with kill ratio less than 10%
Win 1 skirmish battle
Destroy 100 buildings in one game
Build an ICBM in skirmish or multiplayer modes
Finish the tutorial
Win 10 network multiplayer games
Win 20 network multiplayer games
Win vs Easy AI
Win vs Normal AI
Win vs Hard AI
Win vs Robotic AI
Win with kill ratio better than 500%
Win 10 skirmish battles
Win 20 skirmish battles
Lose 10 battles
Have 10,000 kills in one game
Beat the Robotic AI within 10 minutes
Beat another player within 10 minutes
Have 5 mega units at the same time in skirmish or multiplayer modes
Mine 1 million ore in one game in skirmish or multiplayer modes
Capture an enemy unit in skirmish or multiplayer modes
Capture a mega unit in skirmish or multiplayer modes
Build a Rapture mega unit
Build a Magna Lase mega unit
Build a Goliath mega unit
Build a Titanis mega unit
Build a Rapier mega unit
Build a Zubr mega unit
Build a Dreadnought mega unit
Beat Omicron Initiative mission 1
Beat Omicron Initiative mission 2
Beat Omicron Initiative mission 3
Beat Omicron Initiative mission 4
Beat Omicron Initiative mission 5
Beat Omicron Initiative mission 6
Beat Omicron Initiative mission 7
Beat Omicron Initiative mission 8
Beat Omicron Initiative mission 9
Beat Omicron Initiative mission 10
Beat Omicron Initiative mission 11
Beat Omicron Initiative mission 12
Beat Omicron Initiative mission 13
Beat Omicron Initiative mission 14
Beat Omicron Initiative mission 15
Beat Omicron Initiative mission 16
Beat Omicron Initiative mission 17
Beat Omicron Initiative mission 18
Beat Omicron Initiative mission 19
Beat Omicron Initiative mission 20
Beat Omicron Initiative mission 21
Achieve a 3 star rating on every mission