Collect all memory cubes
Power every gear nest at least once
Boulder falls on your head
Help Big Guy
San falls inside the factory
Complete every achievement
Recall a spear for the first time
Defeat the last claw
Finish the game
Throw a spear against a Beetle
Throw your spear and retrieve it 3 times without it touching any surface
Help Big Momma
Help Old Guy
Collect the first memory cube
Collect half the memory cubes
Escape from the factory