We are now just over two weeks away from the first Halo appearance on Xbox One! Today, 343 Industries in conjunction with Vanguard Games announced that Halo: Spartan Assault will be available worldwide for digital download on December 24th for $14.99. The Xbox 360 version will follow in January 2014.

Good news for those that have already purchased Halo: Spartan Assault for Windows 8 or Windows Phone 8 – anyone who purchases the game on one of those platforms before December 15th will be eligible to purchase the Xbox One version of the game at the discounted price of $4.99.

As an Xbox One title, there are 1000 Achievement Points up for grabs, which means new Achievements and higher values to gun for. In case you missed it, Halo Waypoint published the full, updated Halo: Spartan Assault Achievement list here.

For more on Halo: Spartan Assault, including Q&A with the Executive Producer and details on the new all-new co-op mode, head on over to Xbox Wire.