Seems Velocitus still does the multihit thing for massive damage on the Core in spite of it being uncrittable (not to mention, it still has amazing raw DPS even without crits). I was able to 2 million the Core pretty much solo. Not sure how Fluctus would work; has anyone tried if it gets like 100 hits per pass? That would obviously make it preferable in spite of its horrid ammo economy and relatively DPS. Either way, a tip for any prospective Fomorian destroyers: run Velocitus if you have it available, it makes hitting the 1M for the rewards a breeze.