Ready for another freemium Xbox Live game this week? Good news then, because Glu Mobile’s Contract Killer launches this Wednesday (if not a few hours early). Today, we exclusively debut the Windows Phone version’s trailer.

Contract KillerContract Killer is a first-person sniping game in which the titular assassin takes on secret missions for a variety of clients.  He’ll choose from dozens of sniper rifles, machine guns, and other NRA favorites in order to dispatch his foes. Each mission comes to life in a realistic 3D environment populated by multiple people. Find the right target, swipe to aim your gun, steadying it if necessary, and press Fire to ruin the bad guy’s day.

Each mission costs a certain amount of energy to take on. Energy restores over time, but you can also purchase snacks with Microsoft Points and get right back in the action. As with Gun Bros and Bug Village, the PDLC here is completely optional and just lets you get through the game quicker. Just buy something if you like the game, or spend nothing if you don’t.

Contract Killer will hit the Marketplace on Wednesday, July 18. Like Gun Bros, it’s free and includes 200 GamerScore worth of Achievements.

That brings us to the elephant in the room… Last week, Glu Mobile’s twin-stick shooter Gun Bros got off to a rocky start. The game is plagued by excessive load times, network issues, and other bugs. It’s a shame because if you look past these problems, Gun Bros is actually quite addictive and has some great social features.

Glu is definitely aware of these issues with the game. They’re working with Microsoft to resolve them with an update as soon as possible. A small number of players have also reported items disappearing from their inventories. Thankfully Gun Bros items can be restored regardless of the update’s arrival. Just submit a ticket at Glu’s customer support website and they’ll take care of you.