Books: Nintendo Games Secrets - The Best of How to Win at Nintendo Games
GZUNYXTK Don't take damage from bomb blast
GZNNIXTK Don't take damage from monsters/stops power drain
IAVTPSZA Gain 5 super bombs on pick-up
GPVTPSZA Gain 20 super bombs on pick-up
SZKTYPVG Never use up super bombs
IEVKLPAA Start with 5 of everything!
ZEVKLPAE Start with 10 of everything!
IANGAPPA Set firing range to 5
ZANGAPPE Set firing range to 10
IEVGIPPA Start with Defense Level at 5
AEVGIPPE Start with Defense Level at 8