read in a game walkthrough:
"You'll probably finish the game with 88%. This is normal. No one has
figured out how to get the other 12%."
@monorail probably yes
@monorail it _could_ be some incredible secret
it also could be that people have figured that out, I don't know when this guide was written
@monorail also the guide has a faq that states that one person is known to have reached 91% completion but they don't know how
@monorail ah, also worth pointing out the game came out in 2003 and the guide is from 2004
@Felthry ah. so less likely to be "incredible secret yet to be unearthed" and more "bad programming"