Riptide GP: Renegade

Story related, can't be missed.

Krex sells you out to the cops at the very beginning of the game. You are looking to restore your honor. In order to do so you will have to beat a few bosses to be able to challenge Krex. Krex is the boss of the fifth level. In order to challenge a boss you have to earn a podium finish on all events on the level in question. Beating Krex himself is not that big of a challenge if you have a proper hydrojet. Refer to Elite for tips.