Full list of all 31 Outer Wilds achievements. It takes around 20-25 hours to unlock all of the achievements in the base game on Windows.
The base game contains 17 achievements, and there is 1 DLC pack containing 14 achievements.
End a time loop (Alive) after having taken (and healed) over 1000 damage.
Land the model rocket on Attlerock.
Complete the ship log.
Use your suit's oxygen in an ill-advised manner.
Launch your ship with a gravity cannon.
Pick up all traveler instruments simultaneously with your signalscope.
Die within 60 seconds of waking up.