Here is the full list of all 79 Broken Lines achievements.
Use Suppression 100 times
End the campaign and get surrounded and killed by vengeful enemies
Experience all possible endings in the game
End the campaign and get surrounded and killed by angry civilians
Avery finds out about Wood’s fling
Morgan opens up to Conner
Conner and Hailey talk about her scar
Complete all boot camp levels
Fail a boot camp level
End the campaign and get successfully extracted by a plane
Kill 5 or more enemy soldiers in a single turn
End the campaign and drive away over the mountains
End the campaign and blow up the dam
Kill an enemy after knocking them down 3 times
Own 0 supplies and 0 salvage
Sacrifice a soldier to blow up the dam
Complete Retribution level in less than 4 minutes and 12 seconds
Cause 10 civilian casualties
Warn the civilians about the upcoming flooding
Complete all levels in the entire game over several playthroughs
Complete the level “Recoil”
Find petroleum
Blow up the radio tower
Complete Contact level in less than 4 minutes and 4 seconds
Buy the fake grenade
Complete the level “Strength”
Conner rejects Avery’s advances
Complete the level “Greed”
Complete the campaign and never buy anything from Izkor’s shop
Complete the campaign with 4 dead soldiers
Lose a campaign
Complete the level “Ambush”
Kill all enemies in the ambush in the level Ambush!
Kill three enemies with one grenade
Get your squad killed in Ambush!
Complete the level “Power”
Find a crate with explosives
Own more than 100 salvage
Have all your soldiers panic at the same time
Have a soldier desert your squad
Complete the level “Evasion”
Encounter the blocked mountain pass
Complete the level “Cruelty”
Complete the level “Revenge”
Fry and Hailey start fighting
Wood and Hailey find the dog
Complete the level “Certainty”
Experience Lieutenant Brooks final words
End the campaign and walk home over the mountains
Complete the level “Consequence”
Buy the best shotgun: Browning Automatic 5
Buy the best rifle: Mosin-Nagant Scoped Rifle
Complete the level “Retribution”
Destroy a tank
Complete the level “Worry”
Find more than 10 supply crates in various levels during the same campaign
King and Sherman have a confrontation
Complete the level “Spirit”
Encounter the maskless enemies
Equip a soldier with 3 abilities, 3 traits, and all equipment slots
Buy the best submachine gun: Sturmgewehr
Eat Izkor’s stew
Complete the level “Contact”
Unmask an enemy
Complete the level “Mischief”
Kill 101 enemies
Complete the level “Decency”
Complete the level “Survival”
Unlock a second Trait on a Soldier
Complete the level “Clarity”
Restart a level
Buy a weapon from Izkor
Complete the level “Release”
Release Fry from Prison
Kill an enemy officer
Complete the level “Uncertainty”
Gain a gold medal from a mission
Complete the level “Wreck”
Introduce yourself to the locals