http://www.netrover.com/~timt/cheats/sn/spaceharrierii.html (Amiga Plus Extra No. 5/97, 05/1997)On the high score table, enter your name as "SPOT" for infinite lives.
If you look at disk two, you'll see some files called LEVEL2.DAT (for example). If you rename THEEND.DAT (or whatever it's called) to LEVEL1.DAT, you will see the end sequence without playing the game!