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
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
Stack three Pillars
Throw a spear six nodes or farther
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