That's right. Who's laughing now Achievement in Army of Two (EU)

Ok so this is an online one, and despite what most people think, you can do it on any map. Not just the new map. Now for this achievement you have to buy weapon pack 8. Just do bounties on any map because bounties makes the most money and once you have $475,000 you can buy weapon pack 8. Once you have that amount or more head over to any weapon station, select pack 8 and buy it. The achievement will instantly unlock.