Just saw the new Dune movie, and this makes me think of the cool way Frank Herbert made it so you could still have sword / knife fighting in this future universe: there's a shielding tech that soaks up plasma weapons, and things that move quickly like projectile weapons. So what's left is kick-ass hand-to-hand combat. Nice hack.

Maybe there's a similar kind of 'attack' like you describe -- slow enough to get past the shields of more kinetic assaults.