Here is the full list of all 27 Sentinels of Freedom achievements.
Defeat an enemy with a Vigilance attack.
Finish an encounter with less than 20 HP on all heroes.
Defeat 6 or more enemies in a single attack.
Collect all Intel drops found in various missions.
Complete an encounter with the player character having EVERY attack type.
Complete an encounter with the player character having only a single attack type.
Complete an encounter with the player character having only Melee attack abilities.
Complete an encounter with the player character having only Ranged attack abilities.
Complete an encounter with the player character having at least one Summoning active ability.Play a mission with a summon abilities for attack.
Score a successful hit with only a 10% hit chance.
Score 3 consecutive successful hits with only 30% hit chance or less.
Fail to hit with a 90% hit chance.
Complete the final Chapter 1 mission on Easy or higher.
Complete the final Chapter 1 mission on Standard or higher.
Complete the final Chapter 1 mission on Hard or higher.
Complete the final Chapter 1 mission on Insane.
Complete a mission using custom difficulty settings.
Reach max aggro on all heroes while in a party of at least 4 heroes.
Unlock all abilities for all heroes in Chapter 1.
Rescue all 3 civilians in the Bank Front mission.
Rescue 10 civilians.
Win an encounter with only your custom hero remaining.
Have your custom hero become incapacitated in an encounter.
Interact 10 times.
Complete a mission without your custom hero.
Attack from behind 50 times.
Score 50 critical attacks.