Has anyone figured out what the steps are to get it or what it does exactly? There is a video on youtube showing a player getting the green glow right after PAP'ing.
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Not 100% on the mystery box persistent upgrade, but everyone is saying it gives you better weapons. To activate just keep using the box until it moves and the next time you use it, supposedely you get the green flash and the teddy bear appears on top of the box. Heard that if you use it too many times or if it gets past round 10 the perk ends, but not 100% on all that info. Maybe more to it.