Full list of all 40 LARA CROFT AND THE TEMPLE OF OSIRIS achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Finish any tomb in online multiplayer
Collect enough canopic jars to unlock an onyx weapon
Finish a tomb in a 4-player local multiplayer game
Defeat Set
Complete the Tomb of the Architect
Defeat the Pharaoh
Complete the Tomb of the Torturer
Defeat Sobek
Defeat the Oracle of Osiris
Complete the Tomb of the Lamplighter
Complete the Tomb of the Ferryman
Complete any level time challenge
Defeat Khepri
Complete the Tomb of the Silversmith
Complete a Challenge Tomb
Revive another player in a local or online multiplayer game
Get the most gems in a tomb in a local or online multiplayer game
Get the most kills in a tomb in a local or online multiplayer game
Have the most deaths in a tomb in a local or online multiplayer game
Complete any red skull challenge
Complete any gold score challenge
Complete the Tomb of the Timekeeper
Wear two rings and an amulet
Unlock a treasure chest
Escape the Pyramid of Osiris
Bomb a player in a Magic Shield in a local or online multiplayer game
Find your first weapon
Complete all Challenge Tombs
Complete all challenges
Complete all Pyramid of Osiris challenges
Complete all Tomb of the Timekeeper challenges
Complete all Tomb of the Silversmith challenges
Complete all Khepri challenges
Complete all Tomb of the Ferryman challenges
Complete all Sobek challenges
Complete all Tomb of the Architect challenges
Complete all Tomb of the Torturer challenges
Complete all Set challenges
In a 4-player local or online multiplayer game, be the only player to not die in a tomb
Complete all Tomb of the Lamplighter challenges