 These include achieving a set high score, collecting the letters S-K-A-T-E, performing a certain trick on or over a certain object, and on certain levels, earning a top-three finish in a competition.Completion of these objectives is necessary to unlock new levels, skateboards, hidden characters, and stat points that can be spent to upgrade a character's attributes.Along with graphical improvements to the game's remade levels and character models, some minor cosmetic changes were made to the environments (such as the addition of an air traffic control tower in the level, "The Hanger").