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| Max Level | 100% | |
| Beat all the characters with one character in Exhibition on level 4. | ||
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| Secret Airport | 100% | |
| To get to the secret airport, win the Island Open in Doubles or Singles. Note that if you haven't beat it in either doubles or singles, you can not get into the airport. | ||
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| DK Star Character | 100% | |
| Defeat DK in Peach tournament. | ||
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| Unlock mini-games section | 100% | |
| Raise Clay (aka Max) or Ace's (aka Tina's) level to 2. | ||
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| Peach Dome Court | 100% | |
| Defeat the Peach tournament in either singles or doubles. | ||
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| Mario Star Character | 100% | |
| Defeat Mario in Peach tournament. | ||
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| Bowser Star Character | 100% | |
| Defeat Bowser in Peach tournament. | ||
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| Peach Star Character | 100% | |
| Defeat Peach in Peach tournament. | ||
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| Luigi Star Character | 100% | |
| Defeat Luigi in Peach tournament. | ||
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| Waluigi Star Character | 100% | |
| Defeat Waluigi in Peach tournament. | ||
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| Ace! | 50% | |
| Defeat all exhibition characters with one character on PRO, u geet a new difficulitie rating ACE | ||
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Players can test their backhand in this role-playing tennis adventure. In this sequel to Mario Tennis™ for Game Boy® Color, players have to train hard in the Royal Tennis Academy if they want to be champions. Players gain experience and improve skills through lessons and tournaments, but in the end, they have to beat Mario™ at his own game if they want to rise to the top of the ranks. Play as Mario, Peach, Waluigi or Donkey Kong® in a slew of wild modes. As players advance through the story, they unlock even more characters, all with their own power moves. Link up with a friend or three for even more frantic fun.