Complete the indicated task to unlock the achievement.

Achievement	How to unlock
A way out!	Obtained the Flare Gun.
Art is Everywhere	Find the unfinished art.
Base Crawling	Repair 10 facilities.
Bridge	Fix the bridge to get access to the refuge.
Dead Man Walking	Complete the game on Dead Man Walking.
Echoes of the Past	Discover what happened to the miners.
Explorer	Complete the game on Explorer or harder difficulties.
Family Reunion	Find where the kid has gone.
First Encounter	Hopefully the last one.
Hell no!	Run away from the bees! Maybe it's safer at night..
High Quality	Find or craft an high quality tool.
How long has it been?	Survive 50 days in the game (any difficulty).
I'm not at the beach, this is a bathtub!	Find the Bath Tub.
Librarian	Read all 36 letters, notes and journals.
Mario and Ricardo	Find out the fate of the couple of lovers.
Mining Town	Reach the Mining Town.
Moon Valley	Reach the Moon Valley.
One day down	Survive 1 day in the game (any difficulty)
Opening the way	Opened the way in the Canyon.
Out in the world!	Move on from the crashsite.
Peekaboo!	Find the curious mural.
Poor boy	Find a Dead Viscacha.
Reader	Read 10 letters, notes or journals.
Roberto, The Helpful	A sane mad man in a world of sane madness.
Saltpeter Plant	Got access to the Saltpeter Plant.
Shortcuts	Open your first shortcut.
Survivalist	Complete the game on Survivalist or harder difficulties.
Survivor	You escaped the atacama desert alive!
Swimming with the Boys	Find the Pool.
Ten down, many more to go	Survive 10 days in the game (any difficulty).
The best you'll get...	Craft a herbs poultice.
Tiger the Builder	Repair all 84 facilities (including story related).
Tourist	Complete the game on Tourist or harder difficulties.
Underground	You unlocked access to the mines.
Welcome to the Atacama	Wake up in the Atacama desert.
What Goes Around... Comes Around..	Found an old acquaintance.
What was that?	Something lurks in the darkness...
What were you expecting?	You discovered the secret of the waterfall.
What's up with this wind?	Encounter a sandstorm.