beat all tournaments
all you have to do is beat the limitation tournament then go to mystic land and beat the survival match.
40
Press R when next to the duelest you want to duel.
ya go to cheatcc.com
You press R button right next to the person and get ready to duel!
You have to beat the expert by 7 seconds.
Clear the game twice. You only see his eyes which are Red and Dark-Glow Red.
if you are playing with a gameboy just press the R button next to the duelist (even dogs & cats can duel...) and there you have it.
In "Yu-Gi-Oh! 7 Trials to Glory," to obtain the card "Polymerization," you can either defeat specific duelists who are known to use Fusion Monsters or trade for it. Additionally, you can find it in certain in-game shops or obtain it as a reward for completing specific challenges. Make sure to explore all available options, including dueling high-level duelists who may have it in their decks.
beat the flipside pit of 100 trials
Mind Control was originally a promo in World Championship 2005: 7 Trials to Glory, for the GBA.
Sorry man, they aren't in this game. I was pretty disappointed when I heard It myself!