This achievement is a pain in the ass because the game is glitched and it will not count a lot of the games you play. Just got 22000+ points in one match and it did not count. I say find a team of 8 people and just boost this one. It should take a few days for every one in the party to get it. Unless the game is patched this is going to be super hard to get.
On that note. My GT is yeskezspanem. Message me here on the site if you are interested.