3D Glasses (Red/Blue)
Collect all 64 Cubes. After you've collected them, go back through the Star Gate
in the 32 Cube room and you will get a different ending.
After the end credits are shown, select "New Game +" mode from the main menu and
start playing. Once you reach the point in the story where you received the Fez
and the Sunglasses the first two times, you get a pair of 3D glasses (the red and
blue kind, not the polarized kind). These automatically enable Stereoscopic Mode,
which can then be disabled in the Settings menu should you not want to use it.
A numbers game (10) : Find the Counting Cube artifact.
Achievement unlocked (15) : RTRTLTRTRTLTLTLT
Cryptographer (15) : Break the code.
Equal and opposite (15) : Find an Anti-Cube.
Get a cube (10) : Find your very first cube shard.
Haikus not epics (10) : Find the Tome artifact.
Hexahedronaut (25) : Collect all 32 Golden Cubes and 32 Anti-Cubes.
Kill screen (25) : Get to the end.
Mightier than the sword (10) : Find the Writing Cube artifact.
Phrenologist (10) : Find the Skull artifact.
Sum total (40) : Find ALL collectibles.
Warp zone (15) : Reactivate all 5 warp gates.