Before each level begins, enter the following button combination to access secret weapons for that level.

Effect	Code
Level 1 Secret Wepaons	Down.
Level 10 Secret Wepaons	Up-right + B.
Level 11 Secret Wepaons	Up-left.
Level 12 Secret Wepaons	Right + A + B.
Level 13 Secret Wepaons	Up.
Level 14 Secret Wepaons	Up-left + A + B.
Level 15 Secret Wepaons	Down-left + A.
Level 16 Secret Wepaons	Right + A.
Level 2 Secret Wepaons	A.
Level 3 Secret Wepaons	Up-right + A + B.
Level 4 Secret Wepaons	Down-left + B.
Level 5 Secret Wepaons	A.
Level 6 Secret Wepaons	Left.
Level 7 Secret Wepaons	Up-left.
Level 8 Secret Wepaons	Left + A + B.
Level 9 Secret Wepaons	Down-right + A + B.