Basic rule of reading comprehension is to read
everything instead of instantly snapping your eyes to some part about powerups and getting completely wrong idea.
For basic tips, look at the
name of the document which is
game design document. Then, most important of all, look at the date which is
2005. This was a basic draft of the concept/design, the real game is nowhere close to it. Things changed during development.
And all this batch of documents etc. looks like folder with press materials. That's all.