Here is the full list of all 23 Lightmatter achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
The human body can survive 21 days without food.
You crossed paths with that four-legged fluff ball.
I heard that tool is quite a hit.
Do you need a break?
Hey, don't kick that!
Quantum superposition at the push of a button.
Didn't you sign the NDA?
Sometimes it's good to vent a bit.
Hey, Who Turned Out The Lights?
Faster than light.
Big Brother is watching you.
You can have your cake AND eat it!
Someone seems to be addicted.
1095.3 burgers were consumed during this production.
You saw it through to the very end.
I like cats.
Be careful with those photon connectors!
Thank you.
Remember to sign it once you get out.
Where are you going?
You pushed the button too hard.
Saving humanity.
Take good care of that lamp!