When Puzzle by Nikoli X Sudoku (Win 8)
was released back in September, there was quite a bit of confusion surrounding the title. Despite carrying the LIVE banner on the marketplace, there didn't appear to be any achievements associated with the title. Enquiries to Microsoft's support service provided mixed results but the general consensus was that the title was never supposed to have been LIVE enabled, despite the Playstation 3 equivalent getting trophy support. It turns out that this consensus was incorrect.
Today, six months after the game's release, five LIVE achievements can now be unlocked for a total of 200G. This is the good news. The bad news is that the game is no longer available on the marketplace. Removed some time last month, these achievements can now only be unlocked by those that purchased the game before it disappeared.
If the game becomes available once more then we will be sure to let you know.