Blue cube

Directions
From the Nexus waypoint:
 * 1) Down
 * 2) Down
 * 3) Down
 * 4) Down
 * 5) Down
 * 6) You'll be in a glitchy zone.
 * 7) Left
 * 8) Left
 * 9) From here, you can either:
 * 10) Go Up while on the left edge of the screen, then use the "out-of-bounds" swapping trick to get the chest
 * 11) Go Up while standing on the fifth tile from the left