Don't play Borderlands The Pre-Sequel. Just don't. It gets worse the more you play.

And especially don't play the DLC. Basically the same enemies, and the final boss battle is ridiculous and extra frustrating. Even if I were to grind a lot, and gain a few more skill points, that does nothing to mitigate the insane health bar that bitch has. I'd rather play something else.

If you haven't played the series, just stick to Borderlands 1 & 2. They are indeed awesome and worth playing, but if you thing TPS has more of the same to offer, you are mistaken.