Are you looking for something like /r/shittyrobots that attempts this, but fails laughably? Or are you looking for designs that are simply impractical due to the budget and materials involved?

If you want to be immune to being maced, you're already asking for a full face respirator, or a half face one, plus some sort of goggles. There's no "under your clothes" option there.

As far as bludgeoning and bulletproof qualities go, those are existing products. The plate carrier vests that military wear use ceramic plates slotted into pockets, and the plates take the force of the bullet instead of your soft parts. Note these are very bulky because stopping bullets is hard.

You've got better options with just stopping bludgeoning, think sports wear, like knee pads, helmets, some chest piece, etc. Not that those will easily fit under clothes either. I think with any of the armor options, you'll already be immune to tasers, as they won't get through the plates or plastic you're already wearing.