Whenever I enter the nether I am greeted by Zombie Pigman soldiers. Which I cant kill with even the most powerful stuff that I have . I cant even go back into the nether because of them. They will kill you in seconds.

Yeah they need to be nerfed. I just disable nether mobs in the config.

Where do you do that in the config?

Well, Me and my friends saw that the Demons and Pigmen spawned in "Hordes" so we would bring cobblestone. We would build a little base and bring basic things like a revolver since it still does a good amount of dps. Armor we don't really use but soldier armor is cheap enough.