An unlock system based on pure randomness is not a system, its chaos that leaves the player with no real way to achieve his or her goals. I for one hate this update as it stands because I've waited for a sniper update for some time now, only to find out that there's nothing I can do to guarantee the unlocks I want (played for probably 5 hours yesterday with 0 unlocks).
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But what do I know? I don't play.