Here is the full list of all 18 Lara Croft GO trophies - there are 3 bronze, 5 silver, 9 gold and 1 platinum.
Collect all trophies
Throw a spear six nodes or farther
Stack three Pillars
Return from the Mirror of Spirits
Break all Vases
Complete all Relics
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
Kill a creature by making it fall to its death
Find the Key of Snakes
Complete a Relic
Find a Relic Fragment