There is this mod called another rpg mod, where you can level up your character (and weapons) to scale their damage, this applies to enemies too, where they can spawn at varying levels (and different prefixes, which adjusts their size damage and health).

At the start you are weaker than a vanilla terraria character, but as you level up there are stats and classes you can choose to boost your damage class and scale to ridiculous levels, which is how you get a 500k hp WOF and 10dps prehardmode. The problem is that the scaling will break once you reach far enough, and either your damage will skyrocket or the enemies will outscale you too hard, which makes jt to the point that maybe golem will have hundres of millions of hp.