This page contains Harry Potter And The Half-Blood Prince Unlockables for Xbox 360 called "Secret achievements" and has been posted or updated on Jul 27, 2009 by stellakimilon77. Let us know what you think of this Unlockable by thumbs voting.
Complete one of the following achievements to collect their Xbox Gamerscore points:
|Unlockable:||How to Unlock:|
|Burrow Defender (20 GP)||Successfully protected The Burrow.|
|Escaped the Cave (40 GP)||Escaped the Cave.|
|Mystery Solved (20 GP)||Retrieved Slughorn's missing memory.|
|Quidditch Champion (30 GP)||Won the Quidditch Cup.|
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