First we can try to just get a bunch of people on and keep searching all at the same time to try to get paired up with people untill one person gets it then so on.
Second we can just get a few people to get on really early like 2 or 3 in the morning and we can just search and find each other..i think this way would be easier because we would need less people but the more people we have the easier this impossible achievement will be.
Just respond here or send me a message on xbox if you want to try this this is the last achievement i need to 1k this game i spent way too much time on kombo challenges to not 1k it.