One thing that hurt V2 on release was optimization.
The closed beta I got into about a month or so ago was chugging pretty bad. Hopefully they are able to shore it up before this is set to release in a month.
There is another closed beta next week if you want to sign up for it.
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A plus defender, which encompasses the players defensive range, throwing arm strength & accuracy.
The metric used to track this is called defensive runs saved.
I am also playing/powering through Katarin in RoC to unlock Boris. Just putting it on Easy/Easy to get the 3 settlements, doing the quest battle then checking out.
If you Co-Op, both Belakor and Boris are playable with out having to unlock them.