No missable achievements (plus 52 unknown)
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Set foot on the planet
Complete your survival training
Find the ladder down
Survive a tornado
Extinguish a torch in water
Start the Communication Tower
Find and pick up the music player
Collect your first secret
Overcome the dark encounter
Get hit by a spike plant
Have seen the dolls that cannot be unseen
Reach the island of Flashpoint
Complete Flashpoint
Complete the library
Return to the first caves after Flashpoint
Reach the island of Highpoint
Explore the backside of the first island
Enter the Ice Path
Enter the massive ice cavern
Swim far off shore
Complete Highpoint
Reach the island of Hotspot
Open 50 boxes
Find the energy source
Collect 50 secrets
Return to the Crossroad Island with an energy source
Collect 75 secrets
Teleport 10 times in 30 seconds
Jump into the Hotspot crater
Drink champagne 3 times
Find Milson
Dip your head in acid water
Phone home
Fall for at least 5 seconds to your death
Collect all secrets
Hasn't picked up PDA until 5 minutes has passed
Only eat alien 10 times in a row
Show some love to rocks - smash 20 rocks together
Have 16 rocks in inventory
Get hit by lightning while holding a hammer
Carry 10 pieces of Tower Pieces in your inventory
Blow up a torch in H2S without getting killed