Here is the full list of all 38 Freeman: Guerrilla Warfare achievements.
Accept volunteer troops 5 times
Die 50 times
Lose 50 battles
Fail at stealing 50 times
Plunder 50 times
Steal 50 times
Forge 5 alliances with other nations
Throw 200 grenades
Have -200 Reputation
Kill 100 enemies with submachine gun
Kill 100 enemies with pistol
Kill 100 enemies with shotgun
Have -100 Reputation
Have -30 Reputation
Construct 50 buildings
Land 1000 headshots
Recruit all available companions
Kill 1000 enemies in total
Fully upgrade your Stealing skill
Fully upgrade your Agility skill
Possess 5,000,000 Zolties
Fully upgrade your Medicine skill
Fully upgrade your Intelligence skill
Possess 1,000,000 Zolties
Reach 500 Reputation
Forge 3 alliances with other nations
Reach Level 30
Reach 300 Reputation
Win 50 battles
Defend your city 5 times
Kill 100 enemies with grenades
Land 100 headshots
Win 10 battles by yourself
Possess 100,000 Zolties
Kill 100 enemies in total
Reach Level 10
Reach Level 5
Reach 50 Reputation