Reminds me a lot of the MnF games, but with much better artwork, and without the same damn sound effects... so yeah, most of the score comes from putting the others down.
Lot of scenes packed into a little game, and the choices actually have an effect, though of course the final destination is always the same.
Trying to find all the endings was a slight pain, not in traceing them out, but sitting through the opening bits again and again. A 'go back to previous choice' option would have been nice.