Fuzion Frenzy 2

From the main menu, select 'Main Battle' then 'Tournament'. Make 1P the player you want to get the achievement with, and hit  Then, set the other three players to 'COM-Easy'. You can do it with Normal or Hard, but Easy is, well, easier. Hit , then select the amount of rounds. Any amount will work, but select '2' for the quickest game.

You shouldn't have much trouble physically winning the Mini-games. The first time you encounter a minigame, hit  at the instruction screen to practice. You can practice for as long as you want, and it won't affect the game at all. Once you feel you're good at the Mini-game, start it for real.

However, the cards might throw you for a loop. After you select your planet (I recommend Earth to start), every player receives two cards; a x2 multiplier and a Steal card. These refer to the points you get after the Mini-game, which are as follows:

First - 10 points
Second - 6 points
Third - 4 points
Fourth - 2 points

For the very first round, select your x2 multiplier card. No bot will ever play anything the first round, and you should be playing Judgment Tower, so that's an easy 20 points to start. For the second round, play your Steal Card. You should end up getting someone else's x2 multiplier, and that's another 20 points. Throughout the game, you will be randomly put in a mini-mini-game where you have to grab a dropped card. These cards can throw a wrench in the works, as they can give you up to a x6 multiplier or give you the power to reverse the multiplier effect, that is, divide by that amount. It's best to ignore these entirely. Only play a multiplier if it's the first round of the planet or if no one has a Steal or a Reverse. The cards that ensure you can pick the game or the planet are pretty much useless, as you should be able to win any Mini-game. Even if you have to get 10 points for Rounds #3 and 4, that will leave you with 60 points, which will give you a win 90% of the time.

Rinse and repeat for the second planet and you win!