Here is the full list of all 42 Gunpoint achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Mock the chief of police at a critical moment.
Tell Gessler that Rooke's hired you to betray him.
Use the Prankspasm to knock out someone who isn't standing near a power socket (outside of the test lab).
Slam Fritz Gessler's office door into him.
Beat Fritz Gessler to death.
Defeat Gessler by rewiring his gun.
Kick Fritz Gessler's office door into him.
Complete the police chief's missions without incriminating yourself.
Conceal your presence at the DataSec break-in from Mayfield.
Knock Fritz Gessler out of his office window.
Catch a guilty man at the expense of freeing an innocent one.
Chicken out of telling Katie the truth at the last minute.
Upgrade your Bullfrog Hypertrousers to pounce instantly.
Knock Fritz Gessler out with a punch.
Intimidate Fritz Gessler into surrendering.
Jump into an Enforcer to knock him through a window.
Use the Gatecrashers to kick a door through a window.
Use the Gatecrashers to kick a door into a guard.
Create a custom mission with at least one objective.
Complete a mission faster than I can.
Publish your personalised epilogue.
Notice the story doesn't necessarily gel with the mechanics. Become qualified games journalist.
Complete the game.
Shoot Fritz Gessler.
Use the Gatecrashers to kick a door off its hinges.
Use the Longshot to make a guard unintentionally shoot another (outside of the test lab).
Free an innocent man at the expense of catching a guilty one.
Use the Crosslink to create an infinite loop that burns itself out.
Upgrade your battery capacity to the non-figurative max.
Steal Gessler's technology for Rooke.
Help justify my early, not entirely wise choice of game name by holding someone at gunpoint with the Resolver.
This is an achievement in name only. No-one admires you for punching a guy that many times.
Use the Hushcracker to jump through a window silently (outside of the test lab).
Voluntarily tell Katie the truth.
Upgrade your Bullfrog Hypertrousers to maximum jump strength.
Use the Dropshot to land silently from a great height.
Use no violence at all on a mission that has guards.
Complete a mission that has guards with no violence, witnesses or loud noises.
Knock a guard out by opening a door into him.
Get knocked down by an opening door.
Leave no living witnesses to your presence on a mission that has guards.
Wire an elevator button to trigger something when the elevator arrives.