I just re-bought this game, so if you need help with this game, or previous Gears of War games (the first, PC, and/or 2), I can try to help. I already have the achievements for 3, so in games like Horde I could just upgrade the fortifications and Silverback for you all, or just give you my money. Whichever works better as support.
Is there a day or date you all were looking to play?