I've been hunting the Dozen and finally tracked Diana but when I attack, her ship becomes invincible. I pour everything I have on my dreadnought and only manage to take down her shields, the hull is completely undamaged. I've tried reloading the game and sometimes I managed to get her to 89% at best with heavy weapons.

This is even weirder because I had managed to defeat her before but now is impossible. I've checked on the steam forums that it might have something to do with enhancements that give damage against warmasters but I had no luck trying them on or switching them out.

Anyone ran into this before?