In this game, are three different endings. These will be viewed after finishing Stage 5-4 on the named difficulty (except one-star (easy), which has no ending shown). After beating the game on any difficulty (except the four-star difficulty), you will then loop through the stages again on the next-highest difficulty.

Ending	How to unlock
Ending #1	Beat the game on the two-star (medium) difficulty.
Ending #2	Beat the game on the three-star (hard) difficulty.
Ending #3	Beat the game on the four-star (very hard) difficulty.