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.
Complete the ship log.
End a time loop (Alive) after having taken (and healed) over 1000 damage.
Launch your ship with a gravity cannon.
Pick up all traveler instruments simultaneously with your signalscope.
Land the model rocket on Attlerock.
Die within 60 seconds of waking up.
Use your suit's oxygen in an ill-advised manner.