Retirement Savings Plan Achievement in Army of Two (EU)
Retirement Savings Plan40
Earn one billion dollars in total in ranked matches.
How to unlock Retirement Savings Plan
Earn $1,000,000,000 in ranked games online. Good teamwork and knowledge of the maps can net each player a few million dollars every 10 minutes. Collecting minor objectives is a good and efficient way to boost your earnings.
For help on this, check this thread.