Beat Competition Hard mode in first place. Then, alternatively beat Freestyle mode in first place for the Trick, Time, and Total in a ten courses.

Play as Boss

Beat Competition Mirror mode in first place.

Play as Gray

Achieve the Gray rank in Trick Master mode. Then get a score of 37.5 or greater in the Half Pipe.

Enter Freestyle boards with all the tracks. Then set the top record on all those tracks.

Mirror mode

Beat Competition mode and enter the options screen. Press Select on controller two, then at the mode selection screen, press R1 and Square.

Alpine SP board

Beat Freestyle mode in first place for the Time category in at least five courses. Then, the board will become available in all the modes except Tour Competition and Halfpipe.