Knowing how to unlock characters in Back 4 Blood is important as, while there are eight to chose from, all with specific buffs, you only get four to start with. The final set of cleaners, Doc, Hoffman, Jim and Karlee are locked away at the start, and the game gives you no indication how you can to access them. Obviously that can leave you wondering what hoops you’ve actually got to jump through to get the full cast. Fortunately it’s easy, if unclear, how to get a full complement of cleaners, so let’s explain all…
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