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