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25 G

This achievement can be difficult for some.... Especially if you don't have the achievement for 24 medals. But, with this guide, you should be able to complete it. First, try to get through the rounds without taking a blow because you will receive a bonus at the end and try performing the (RT+Y) attack while they are on the ground because it nets you the most points especially with a high combo. It however does leave you vulnerable to an attack, so do it when no one is near you.