Upgrade your characters for Sonic Dash 2: Sonic Boom - iPhone iPod

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• Upgrade your characters

Each character has a special score modifier on them. For example, Sonic has a distance score bonus. Depending on how far you run, you'll earn bonus points. On the other hand, Amy has an enemy score, which gets you bonus points depending on how many enemies you attack. You can increase the bonus by upgrading Sonic. Upgrading characters costs a hefty amount of rings but it'll help boost your score.

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