Tip for 3 Army of Two achievements

For anyone who has Army of Two or plans to play it in the future on the 360, here's a tip for getting the 3 money based achievements.

Whenever you buy something that relates to an achievement, buy them all at once and when the achievement unlocks turn your system off. This way you will have the achievement and your money back.

This works for the two achievements: Say Hello to my Little Friends and Man of Many Masks. By doing this, you can buy everything you need and then turn the machine off so that your money is intact as you work towards If I Were a Rich Man.