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