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