Assassin/Ninja Help Returning to the game Lvl 67 Assassin

Its been a while since I've played, I'm lvl 67 with an acrobatic Archetype focused build (thats what the skill thingy says) I've got some decent armor (Venison, Odyssey, Morph-Iron, Morph-Gold) I'm using a Perfect Morph-Emerald, Perfect Morph-Topaz, Vindicator and Morph-Ruby and my weapon is Locrian, its okay but I feel like I have the capabilities to have a better build, I'm grinding to lvl 70 tn if that helps. Any advice helps!!