Here is the full list of all 15 Signs of Life achievements.
Wreck the Buff Mechington.
Discover the fate of the Hermes Captain.
Cook and eat human flesh.
Drink an explosion potion. For some reason.
Find a jug of piss. For some reason.
Defeat the Buff Mechington with a kick to the butt.
Make a lewd gesture with the Magnetic Inductor while in a bed.
Soil a chicken with dung.
Kill a chicken with an egg.
Get brown on you.
Craft a rough gem.
Craft a refined gem.
Craft a faceted gem.
Craft a brilliant gem.