Go to "Deniable Ops" from the main menu. Goto the top Right box, and go to "uniform". Under here, select any uniform, and then press "X" to "upgrade" it. Upgrades run 100 Points each. Buy any upgrade for any uniform and this achievement is yours.
TIP: It is recommended that you dont buy upgrades for the "VR ZVEZDA", because it is not needed for any other achievements.