I reckon an optimised time would be around the hour and a half mark, skipping cutscenes and pre-determining high point-scoring tricks as well as planning a route. I'll accept your run without proof for now since no one is doing anything yet.
I don't check this website too often, only about once a week, if you're interested in doing an Amped 3 run, or want to become a mod, please reply to this thread, link your twitch or youtube if you're going to stream/upload it too!
I'm trying to get into running this game and I think it would be really cool if there was a place to post TarreyTown% runs, starting at new game and finishing upon completion of the Tarrey Town quest 'from the ground up'.