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.
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.