Endless mode arms:
To unlock Endless mode arms, successfully complete the first level of any arm amount. You can use that arm amount in Endless mode.
Snake mode:
To unlock Snake mode, score 1,000 points in Endless mode.
Five Arms mode:
To unlock Five Arms mode, successfully complete all levels. There are five levels in Five Arms mode, as well as a Five Arm endless mode.
Alternate endings:
Unlock an alternate ending by performing one of the following tasks:
ALTERNATE ENDING – HOW TO UNLOCK
Alternate Ending #1 – Successfully complete level 5-7.
Alternate Ending #2 – Earn “All Complete” for all stages on all levels.?