Here is the full list of all 11 Iconoclasts achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Survive the encounter with an agent.
Made a tweak.
Use the wrench to deflect danger.
Reach the city.
Protect the rocket.
Complete the game.
Defeat Mother's Corners.
Defeat Fitzroy.
Make all main tweaks.
Get all chests in one playthrough.
Beat Challenge mode.