Conclusion: The last 2 achievements are pretty straightfroward. Start a game on each difficulty level is pretty self explainitory and the online achievement is easy. Find a boosting buddy and start a online game. Overall, this game was fun. Brought back memories of Sega. For the 400MS points it cost though, I was hoping for something a little more challenging.
Summary: It's not a good game. I'm not sure it ever was good. I think it's one of those titles that people will go "Ooo, Altered Beast" and have fond memories of playing but then come to play it and realise that, actually, it's a bit shit. Even the rose-tinted retro glasses can't make this release seem any better.