Surfing H3O
Tyrone King, Lara Barcella, Gareos, and six more boards:
Successfully complete the game under the normal difficulty setting.
Morsa, Serena Knox, Jojo, and six more boards:
Successfully complete the game under the semi-pro difficulty setting.
Mikey Sands, Largo, Lyco Sassa, and five more boards:
Successfully complete the game under the pro difficulty setting.
Surfoid and three more boards:
Successfully complete the game under the master difficulty setting.
Alternately, get over 500 points on each of the levels.