To promote activity on Labor Day, Gears of War 2 is having a double experience weekend...again. Like the double XP weekend they had not too long ago, you will receive double XP (obviously) as well as 500 additional XP points for a multiplayer win starting September 4th and running through September 8th. This time, however, Horde mode will default to Hardcore difficulty and every 10th round will be filled with Sires instead of masses of Tickers. If you are looking to finish off your multiplayer level-related achievements, this weekend will be a great time to do it.