You and your pierce weapons.
If you hit the knights with the hammer directly, it does damage without causing a shockwave.
I'm talking about the heavy knights right before the bossfight.
Enjoy getting your ass raped by the tower shields, because they're immune to shockwave damage.
I personally run shields because people think this :P
Shields are great. I'm an assault gunner / reflect shield so it's so god damn useful.
Though, at that point, I prefer to use my Impact Blaster. Armor shatter effects are awesome.
stuff rocks bro.
Sucks it has such low range :c