During play hold down both 'AMIGA' keys, 'C' and press 'F4'. You will be presented with a message and you will get 99 lives.
01-"2625" | 07-"2237" | 13-"9813"
02-"8455" | 08-"5648" | 14-"5052"
03-"2974" | 09-"6390" | 15-"3360"
04-"4916" | 10-"8612" | 16-"2045"
05-"1933" | 11-"4187"
06-"0738" | 12-"1350"