Looks like someone uncovered the hidden code that you can use to unlock the BFG in BLACK right from the get-go. Here is the text from the hidden page on EA’s site:

Need some extra fire-power? Or do you just want to leave your mark with a few hundred bullet holes per minute?

Use the code below to unlock the BFG right from the start, and go in all guns blazing.

5SQQ-STHA-ZFFV-7XEV

Don’t forget to lock and load.

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