250 VIP Patrols is a lot, and I did it with a friend. We would be in a fireteam and drop into Cosmodrome. I would go left, he would go right. We'd pick up VIP bounties along the way, and use weapons we needed kills for. You don't have to be the one that kills the VIP. As long as you're in the same fireteam you'll get credit for it regardless if you're in a totally different area. Once we got through the areas and there were no more VIP bounties, the fireteam leader would take us to orbit. Then we'd do it again, and again, and again. You're able to get 0-6 VIPs in each run. Don't do it by yourself, cause it'll be a severe grind.