"Most rewards are found within a new Crimson Engram"
The keyword here is: [b]MOST[/b]
You'll all be crying when you want that full set of Armour, but you find it's behind a Paywall; aka EverVer$e.
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There is no crimson armour lol it is a few sparrows, coloured ghosts and emoji that's it not worth doing in my opinion