Whenever the pro specific goals are unlocked choose a skater and go to the level whence their goal is. For example,Geoff Rowley's goal is in Kona. If you complete his goal, it will say GEOFF ROWLEY'S GOAL COMPLETE.Then a few short seconds later it will say something like NEW MOVIE UNLOCKED,NEW CHEAT UNLOCKED, and that's how you open the cheats menu.
(please take note that you have to get at least ONE cheat to open the cheats menu.)

do the whole entire game with every person by getting everything including all stats and all decks and all goals.And of course the medals have to be all gold.