The codes should work with the region specified but may work for other regions as well.
- Enable Code (Must Be On)
00002467 000A
1000D678 0007 - Infinite Health
33001F10 0050 - Maximum Energy
33001F24 0050 - Transparent
73004772 0008
33004772 0010 - Have Keys
33001F78 000F - Moon Jump
D0000020 0001
83000DCC 027A - Press Select+L To Skip Stage
74000130 01FB
33003D46 0008
74000130 01FB
33004754 000C - Unlock Time Trial
33003C0A 0001
43003C04 FFFF
00000003 0002 - Unlock All Difficulties
83003C02 FFFF
Weapon Modifier Codes
- Press Select+Up For Level 1
74000130 03BB
33007100 0000
73007100 0000
33001FAC 0000 - Press Select+Right For Level 2
74000130 03EB
33007100 0001
73007100 0001
33001FAC 0001 - Press Select+Down For Level 3
74000130 037B
33007100 0002
73007100 0002
33001FAC 0002