If you've been waiting for a double XP event in Gears of War 4 , now is the time. The Coalition is celebrating the game's first birthday with ten days of global double XP in Horde and Versus, purchasable Golden Gear Packs, the return of the Golden Gun game mode and more surprises to come.If you're out of town or busy this weekend, no problem. The double XP is lasting a rare ten days from October 6th to October 16th.Players can also purchase the Commemorative Golden Gear through the Golden Gear Pack, with The Coalition saying "only those who were there and collected him will ever have this character." The pack will be available for 400 credits until October 13th and will return briefly on October 20th before disappearing.Keeping with the Golden Gun theme, the Golden Gun game mode has returned for the event "by popular demand." Similar to's One in the Chamber, you only have one bullet, but when one hit equals one kill, that's all you need. Each time you get a kill, you'll get a bullet back.The event is live foron Xbox One and Windows 10. The Coalition has also promised more surprises next week, since October 11th is's official birthday.We've got the full list of Gears of War 4 achievements - check the list for guides to unlocking them.