Here is the full list of all 17 Lara Croft GO achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Throw a spear six nodes or farther
Stack three Pillars
Return from the Mirror of Spirits
Complete all Relics
Break all Vases
Unearth the Shard of Life
Slay the same creature four times in a row
Discover the Atlas of Beyond
Slay the Queen of Venom
Find the Key of Spirits
Get crushed by a Boulder
Stack two Pillars
Find the Key of Stones
Complete a Relic
Kill a creature by making it fall to its death
Find the Key of Snakes
Find a Relic Fragment