Here is the full list of all 48 Signal Ops achievements.
Complete all missions without using reinforcements.
Destroy 2 vehicles at the same time.
Blow up 5 vehicles with bombs.
Complete all missions without loading an in-progress mission.
Collect all secret documents.
Keep all band members alive.
Plant the bomb on the train without raising the alarm.
Get on top of the briefing room table.
Complete Operation Arrival without killing the checkpoint guard.
Kill both of the informants.
Complete the final mission without rescuing any agents in the agency.
Complete the warehouse practice mission in less than 3 minutes.
Complete the final mission with all agents rescued and alive.
Your rescued agents killed enemies while escaping in a truck.
Kill at least 10 enemies in the warehouse with an agent under your control.
Have one of your agents shoot you.
Put pie in a soldier’s locker.
Stop the Hammer Dice game through non-violent means.
Catch a ride on a transport truck.
Set off a chain reaction of at least 4 bombs.
Kill 5 enemies using door traps.
Get killed by a drunk party guest.
Kill all traitors found in evidence planting rooms.
Lose your last agent within 5 seconds of completing a mission.
Distract a guest who is enjoying a pie.
Lose 5 agents due to fall damage.
Kill an escaping drive-by shooter.
Kill an enemy with each of 3 unique thrown weapons in the course of a single campaign.
Complete Operation Matchsticks with only one surviving soldier.
Arrest 10 enemies in a single mission.
Kill 3 enemies with a single fully upgraded bomb.
Shoot the volunteer instead of the bottle.
Bring the radio with you while making a getaway.
Pick up 100 weapons.
Track 10 enemies using the watch order.
Destroy all trucks Operation Matchsticks.
Fall through the world.
Start a conversation with a civilian, police officer, engineer, soldier, and rebel fighter in the course of a single campaign.
Toggle track switches 24 times.
Whistle goes woot woot.
Kill 2 enemies while a truck’s fog horn is sounding.
Collect 6 rats.
Have two agents complete interactions at the same time.
Lock or unlock 50 different doors.
Swap weapons with another human-controlled agent.
Don’t kill any police patrols during Operation Rat Hunt.
Complete a mission without killing anyone.
Plug into a power source with less than 1 second of battery left.