"In a surprising approval by Microsoft, TapSplosion 2.0 just became available in the Marketplace. Why surprising? The developer wanted to add a bunch of Achievements to the game but was worried Microsoft may consider that term 'exclusive' for Xbox Live titles--which is not too far fetched--and deny approval."
The surprising part of the approval is the use of the word "Achievements" in the game description, where it reads, "TapSplosioin is the game that the Windows Phone 7 platform has been waiting for, and now it's even better with Achievements!"
There was concern that the use of the term might not be seen as generic. After all, Achievements are normally associated with XBOX LIVE titles. So a customer might expect that these Achievements would show up on XBOX LIVE. But they don't.
I think it's great that there is some sort of achievement system in a 3rd party game. But would you find this confusing?