Here is the full list of all 27 Commander: Modern War achievements.
Recruit an infantry unit.
Recruit a vehicle unit.
Recruit an aircraft unit.
Recruit a navy unit.
Kill 1 infantry unit.
Kill 50 infantry units.
Kill 1 ground vehicle.
Kill 50 ground vehicles.
Kill 1 aircraft.
Kill 50 aircraft units.
Kill 1 navy unit.
Kill 50 navy units.
Capture a location.
Win a scenario map against at least 1 easy opponent.
Win a scenario map against at least 1 normal opponent.
Win a scenario map against at least a hard opponent.
Complete all tutorial missions.
Achieve max veterancy with a unit.
The Engineer repairs a vehicle.
Complete all Alliance campaign Missions.
Use the cruise missile on the missile frigate.
Fill a hovercraft transport.
Kill 100 ground vehicles.
Kill 100 infantry units.
Kill 100 aircraft units.
Fill an Air transport.
Complete all Coalition campaign missions.