Here is the full list of all 18 Space Ashes achievements.
You found the artefact #1.
You found the artefact #2.
You found the artefact #3.
You found the artefact #4.
You found the artefact #5.
You found the artefact #6.
You found the artefact #7.
You found the artefact #8.
You found the artefact #9.
You found the artefact #10.
You found the artefact #11.
You found the artefact #12.
Die 10 times on the same level.
Die 25 times on the same level.
Cheat Activated.
You pass the first tier.
You beat level 13.
You turned everything to Ashes!