Complete the following achievements to unlock Xbox Live Gamerscore points.
| Achievement | How to unlock |
| The Bibliophile (25 points) | Find all the books detailing the history of Knothole Island, or help another Hero to do so.
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| The Collector (25 points) | Acquire all the mystery items in The Box of Secrets shop, or see another Hero do so.
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| The Meteorologist (50 points) | Bring all of Knothole Island's weather problems under control, or help another Hero to do so.
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