The vindicate makes a good special weapon assassin. Even a turbo penetrator gets juiced half the time, and only wounds half the time, so you'll wound an IC roughly once every 4 rounds of shooting.
Squad sergeants, special weapons, monstrous creatures all might make decent targets.
Best assassins are probably the culuxes for anti Psyker potential and the callidus for her ability to ruin the day of anyone's heavy weapon section.
|