Here is the full list of all 45 RUNNING WITH RIFLES achievements.
Win the Greycollars campaign
100.000 bullets shot
Destroy 10 special crates and deliver 8 secret cargo vehicles
Heal 10 wounded soldiers
Heal 5 wounded soldiers
Unlock 10 enemy weapons
Unlock 5 enemy weapons
Unlock the first enemy weapon
Win the Brownpants campaign
Destroyed the Darkcat tank
Destroy 5 prison bus/doors
Destroy 5 special crates and deliver 4 secret cargo vehicles
Died 500 times
Destroy 2 special crates and deliver 2 secret cargo vehicles
Roadkill 100 soldiers
50.000 bullets shot
Win the Greenbelts campaign
Stab 10, kill 50 with a suppressed weapon and spot 15 strategical enemy structures
Destroy 3 prison bus/doors
Stab 5, kill 20 with a suppressed weapon and spot 7 strategical enemy structures
Kill 500 enemies with blast projectiles
Roadkill 20 soldiers
Heal 1 wounded soldier
Stab 2, kill 10 with a suppressed weapon and spot 2 strategical enemy structures
Destroy 20 enemy vehicles
Destroy 10 enemy structures and 2 communication structures
Died 200 times
Kill 200 enemies with blast projectiles
Destroy 10 enemy vehicles
Kill 1000 enemy soldiers
Destroy 5 enemy structures and 1 communication structure
Destroy 1 anti-air structure
Kill 10 elite soldiers
Kill 100 enemies with blast projectiles
Destroy first prison bus/door
Destroy 2 enemy structures
Destroy 5 enemy vehicles
Roadkill 5 soldiers
10.000 bullets shot
Died 100 times
Kill 500 enemy soldiers
Kill 5 elite soldiers
Win your first map of the campaign
Kill first elite soldier
Kill 100 enemy soldiers