Oh wow, so you've just now beat the Space Station or whatever it's called? That's like a tiny little teaser for the awesomeness ahead.
Like everyone said, scan everything in each room. It gives you more backstory, hints, and will open up secrets in the game. This game is much more about exploration than shooting. Consult guides/walkthroughs as you need when you're stuck.
Take frequent breaks, sit farther back from the TV, chew some ginger candy (helps with nausea/motion sickness), and keep pushing forward. You only experience this game for the first time once and it should be savored.
Btw, as painful as it is for you, the motion controls are a much deeper, immersive, improved experience than the original Gamecube controls. At least, imo.
It'll be awhile before I figure out how to do one of these. :P
