Board Thread:R2D - Questions Board/@comment-25839776-20150228054947/@comment-26160923-20150327061150

Kill a lot of schet. You know what Snake said. You get better at killing the more you do it. In other words, kill and buy better weapons. Rinse and repeat. It's all about moving up the food chain.

Of course, you can always play boss maps and have your teammates do all the work then hog a treasure chest.