Yeah I haven't even touched Odyssey yet, even though I own it. I know I'm going to hate the level gating and RPG mechanics, but I've played everything else in the series so might as well commit.
Making mental note of pirate set
Yeah, the pirate set is amazing. Each armour piece provides bonus assassin damage and higher crit chances and the set bonus is a further boost to all assassin ability dmg. If you combine that with weapons that also boost assassin damage, the game actually plays a lot like the older games where almost everything that's roughly within your level can be 1 hit by sneak attacks. Only things resistant are bosses and special enemies.
Combined wtih rush assassination... oh boy. Unstoppable god. Or goddess, depending on who you pick.
You can acquire the armour pieces by taking down
cultist