Quickest Way to get this.
1. Go to options.
2. Hit select and switch controls to ABC mode and click accept.
3. While in options hit x,a,a,x,down(on d-pad) x,a,a,x
4. A menu should pop up, select 99 lives and health 10
5. Start the game on the third level
I got 500 on the 7th level
Message me for help if you need it