On the select screen (Arcade, Saturn, etc.) press LRRLLR. You should hear
a noise. Now hold L+R and press START. Hold until you see a cheat menu.
This lets you change the blood color, number of lives, and stage select.
Instant Reload:- Pause the game, hold L+R and press YYY
Show the Score:- Pause the game, hold L+R and press XXX