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