Decent punch from MRM30, 2ton ammo 27 salvos isn't much but enough for PUG, and 2MPL complement nicely for short range. ECM to provide the "dark" aspect, paint it black and remain in the shadows! On the game I can add 2JJ, heat drops in stats but as long as you don't use JJ and all weapons at same time, it remains cool, heat 1.46 without JJ. Seems current DD in game have armor bonus not present in smurfy's. DarkDeath isn't my favorite Assassin, but this build proven to be decent! And for extra "darkness", replace the FF with STEALTH armor!
MRM works pretty nicely on Darkdeath. Here is my version with Stealth: _ Run, fire, hide, run, fire, hide...