Here is the full list of all 56 Beyond Enemy Lines achievements.
Get killed by an enemy soldier
Run out of ammo for a single weapon
Kill an Enemy
Play Beyond Enemy Lines
Complete Story Mission 1
Complete Story Mission 2
Complete Story Mission 3
Complete Story Mission 4
Complete Story Mission 5
Complete Story Mission 6
Complete Story Mission 7
Complete Story Mission 8
Complete the Story
Complete the Singlemission Trainyard
Complete the Singlemission Tank Base
Place a C4 charge
Get exfiltrated by chopper on the Story Mission Village
Obtain the keycard in the Story Mission Radar Observatory
Climb a ladder
Open the Tactical Computer
Use the Binoculars
Whistle
Use a computer to turn of the security cameras
Get cought by a security camera
Destroy all Tanks in the Story Mission Launch Pad
Hit a hidden target on Border from a distance of at least 1.5km
Close a valve in the Story Mission Pipeline
Use a zip wire
Destroy the bridge in the Story Mission Bridge Crossing
1010
Cross the border in the Story Mission Border
Kill an enemy with your knife
Kill 25 enemy soldiers
Kill 50 enemy soldiers
Kill 100 enemy soldiers
Retrieve the Chip in the Story Mission Launch Pad
Watch the Credits
Visit the farm in the Story Mission Village
Get killed 10 times
Get killed 25 times
Get killed 50 times
Get killed 100 times
Complete the Singlemission Military Airfield
Complete the Singlemission Dome
Complete the Singlemission Military Airfield as 'Military Airfield DLC' owner
Complete the Singlemission Dome as 'Dome DLC' owner
Play Operation: Arctic Hawk
Complete Operation: Arctic Hawk Story Mission 1
Complete Operation: Arctic Hawk Story Mission 2
Complete Operation: Arctic Hawk Story Mission 3
Complete Operation: Arctic Hawk Story Mission 4
Adapt to new weather conditions on Weather Station
Free a hostage.
Get a hostage killed by an enemy or your self.
Complete the Singlemission Facility
Complete the Singlemission Facility as 'Facility DLC' owner