Doritos Crash Course 2

After unlocking all 5 courses of a specific set.

Simply go to Multiplayer Private Match, Invite a friend & then run through the 5 Levels getting the most Stars.

Do this once for each player & your done.

*Note* A tournament "MUST" contain all 5 Levels of either Amazon Jungle, Antarctica, Egypt, or Pirate Island. You can't just pick 1 Level & get the most stars cause it won't unlock the achievement.

*Note* This cannot be done in Local multiplayer.

Update #1:
Hotdogmcgee reminded me that you can also just come in first each race instead of jumping around grabbing Stars since Gold Medals give you bonus Stars as well.

Update #2:
BP42069 Has also confirmed that you don't need to unlock anything if you join someone elses Tournament Lobby & just earn the most Stars.

So after a few attempts I didn't get the achievement. At the moment there is currently a glitch which stops some people from getting the achievement. To fix this do not tap A after each level until the stats have been updated with the most recent results.

Hope this helps those that are struggling to get the achievement to unlock.

1. Go to multiplayer then private match and select the amazon tournament
2. Invite friend.
3. Win each race, coming in first place, pick up stars on the way but don't go out your way.
4. Remember don't tap a to hurry the stats, let them load in properly. If you tap a you will notice the race counter won't go up. It will say 1 of 5. Make sure the counter goes up after every race.
5. After the 5th race, let the stats load and tap a to return to lobby.
6. Achievement unlocked, repeat for friend

This method is for people who don't want to boost the achievement.

First, go to the multipayer and choose matchmaking. Next, choose the location you are best at (for most this will amazon jungle). Set the favorite mode to tournament (if you don't you will most likely be put into a single track race) and make sure opponent skill is set to my skill level. Hit A twice to save the settings.

Now, choose quick match. You will be able to tell if you are in a tournament if it says "tournament courses" near the bottom right of the screen. Try to get in a race with only one other person, these are the easiest to win.

Once the race starts, focus on winning the race not getting stars. Stars are awarded for getting first place and medals, though how many is unknown but it is higher than the best star collectors can get. Only get stars if they are in the immediate path you are taking. Also, try to beat your opponents by 30s, so they cannot finish the race as that hurts the amount of stars they can earn.

Try to win most of the races and the achievement should pop at the last results screen.

I literally just unlocked this in an Online Multiplayer match.

From my understanding, I could be way wrong but you need to either: Win the most matches and have the most "Points" in the leaderboard, or collect the most stars on the courses in the 5 track Tournament.

At the end of the tournement I was first and won every game so I had 30 points, so this is probably what is required to get the achievement.

Down vote me if I'm wrong, or give me feedback on what is required. Again, this is just how -I- unlocked it.

Edit: Apparently you must collect the most stars in the game. Which could be awkward since they count for Single player collections aswell as far as I'm aware.

You also cannot do this locally. It has to be on Xbox live.
Thanks to Mystic Typh00n for this.