Full list of all 56 Hell Let Loose achievements worth 1,270 gamerscore. It takes around 80-100 hours to unlock all of the achievements in the base game.
The base game contains 40 achievements worth 1,000 Gamerscore, and there are 4 DLC packs containing 16 achievements worth 270 Gamerscore.
Win 25 Warfare battles
Win 25 Offensive battles
Kill your first enemy
Revive a friendly player
Revive 10 friendly players in one match
Place your first OP/Garrison
Get 100 kills with Artillery in total
Teamkill yourself with your own grenade
Win a match as Axis
Win a match as Allies
Play 5 matches on Sainte-Marie-du-Mont
Play 5 matches on Foy
Play 5 matches on Hürtgen
Play 5 matches on Sainte-Mère-Église
Play 5 matches on Utah Beach
Play 5 matches on Omaha Beach
Play 5 matches on Purple Heart Lane
Play 5 matches on Hill 400
Kill 5 players without dying
Lose a match
Be the last player alive in your squad
Drop 100 Ammo boxes
Drop 5000 Supplies in total
Capture 100 Sectors
Build 100 Fuel Nodes in total
Build 100 Manpower Nodes in total
Build 100 Munition Nodes in total
Build 20 buildable objects in one match
Kill 10 players without dying
Kill 100 players with headshots
Destroy a vehicle
Destroy 100 vehicles
Destroy a vehicle with an AT mine
Destroy a vehicle with the Artillery
Drop 250 Supply Boxes from a Supply Truck
Reach Career Level 10
Reach Career Level 20
Reach Career Level 30
Reach Career Level 40
Reach Career Level 50
Play 5 matches on Kursk
Play 5 matches on Stalingrad
Play 5 matches on Kharkov
Spawned a total of 100 times onto the battlefield through the Half Track
Get burned by a flamethrower, molotov or flare gun
With the Flamethrower, killed an enemy that is also wielding the Flamethrower
Killed a total of 100 enemies with the Flamethrower
Destroyed a total of 50 Jeeps
Kill 10 enemies with a flamethrower without dying
Throw a Molotov for the first time
Drop 50 ammo boxes with a Jeep
Have thrown a total of 100 Molotovs
Play 5 Matches on El Alamein
Play 5 Matches on Driel
Enter the Practice Range
Play every role in the Practice Range