During gameplay press A + Y to become invincible when moving and changing the angle of your shots. If you stop shooting to pick up an item or enter another room the code deactivates and you will become vulnerable again.

Unlockable Achievments

Unlock Cash Pile:
Get 2,000,000 points at the end of Level 1

Unlock Co-Op:
Under default settings complete Level 1 with another player

Unlock Co-Op Master:
Under default settings complete the game with another player

1st Boss:
Under the default settings defeat the final boss in level 1

2nd Boss:
Under the default settings defeat the final boss in level 2

3rd Mini-Boss:
Under the default settings defeat the final boss in level 3

Final Boss:
Under the default settings defeat the final boss in level 3

Level 1 Master:
Under default settings complete level 1 without continuing

Level 2 Master:
Under default settings complete level 2 without continuing

Level 3 Master:
Under default settings complete level 3 without continuing

High Score:
Under the default settings get first place on the game score board

Game Master:
Under default settings complete the game without continuing