LogFAQs > #895207136

looks like he used some cheat to max the score on a lot of those since its the max score listed. As for the "these scores need 15+ hours" I know some people do marathons like that. He could have left the game running over night or something. Or someone just put in max scores and said they were "records" It looks like they were input from another site.

Some of the records he used "cheats" for. That Grand Prix one says Impossible, but then there is a link to a youtube video showing that time. The one for skiing was done with a trick. Not impossible as it says. In the link others have the time with a trick. Why not just create a separate category for the run with the trick.
Another one the score is impossible says its possible if you kept the demo running.

I think this guy just found exploits to raise the scores. Is it cheating? Maybe.
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Don't mess with a Bunny!