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Old 06-27-2011, 01:10 AM   #14
Join Date: Jul 2010
Posts: 38

Gamertag: asilentquiff
I just got the achievement today!!! I went through the game on casual and didn't upgrade anything. After getting enough points, (141,600) I bought one upgrade at a time, closed out of the box, and shot the gun a couple times. I then continued to do the same for all weapons, including the jetpack. Buy upgrade, exit out, shoot gun, buy next upgrade. I bought all the upgrades from the ingame box btw.
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