Here is the full list of all 27 Starsand achievements.
Find the credits stele
Wear every piece of armor
Place 10 markers or turrets on the map
Survive 1 day in the desert
Ride a camel
Repel the swarm of flies with a torch
Complete the tutorial
Find all locations
Find all oasis
Get a running go and jump in the water from a height
Drink too much water
Explore the pyramid
Survive a week without eating animals
Kill 35 aliens
Wear the Gods Suit
Find all Chronicles
Cut down 20 canapa plants
Kill 3 aliens with a single explosion
Kill 15 aliens using traps
Experience death for the first time
Check what lies at the bottom of the lake
Cook all the recipes
Burn the nest
Kill 60 aliens with the Seeder rifle
Follow your destiny through the portal