Diddy Kong Racing/Sherbert Island

Whale Bay

 * Strategy


 * Coins


 * Track Times

Crescent Island

 * Strategy


 * Coins


 * Track Times

Pirate Lagoon

 * Strategy


 * Coins


 * Track Times

Treasure Caves

 * Strategy


 * Coins


 * Track Times

Darkwater Beach

 * Strategy


 * Coins


 * Track Times

Boss Circuit
This boss is extra challenging the second time around, after the "silver coin challenge". If you hit one of the bubbles, you have basically no chance of catching up. The best advice is to practise the track a few times, and just get used to where all of the bubbles are. Once you can instinctively circle the track without hitting a bubble, then it's time to try and beat him for real. Use rockets. The first red balloon is just outside the first rocky arch you approach. Skirt around the arch to pick it up. The second red balloon in the length of cave is situated right next to a bubble; this can be a problem, but it's possible to get the balloon and miss the bubble. Fire immediately to slow down the octopus.
 * Strategy

It's possible to hit him two more times as you approach the finish line; go for the red balloon situated on the small island just after the second rocky arch, line him up as he's passing the next set of little islands and fire. Then grab the red balloon on those island, and hit him as you both cross the finish line. I've found that this is enough to get in front of him.

Once you get past him, about half the bubbles will no longer be in front of you. You don't need to worry about balloons any more, just concentrate on avoiding the remaining bubbles, and stay to the "inside track" - i.e. skirt the beaches where possible, the sand won't slow you down, and you'll have slightly less distance to cover (who said geometry wasn't useful?). As long as you make a clean run through, he won't catch up to you.