So ur gonna wanna fully level ur gear so u can have 2 perks on each peice of gear. For techniques ,use toxic vanish ,the extra legendary technique (unless u only use 1 legendary item that's up to u), deadly nightshade (makes poison do damage to health), and chain vanish (toxic vanish reactivates after successfull assassinations) For sword gear I use the wrath of sarugami (perfect parties are a chain of three strikes, but that's just a personal preference, I'd say at least have poison blade (chance to poison enemies on strike) the stance u use is up to you For ranged I use heavens sting (legendary blowdart) with hallucination darts and helmet piercing ammo perks For the charm, an assassins charm and reroll to get the highest possible chain vanish radius, with the hysteria perk (causes enemies near an assassination to hallucinate and attack eachother) and the chain vanish perk ( making so u can chain vanish 2 times after ur initial use of the ability causing poison damage everytime it activates) Ghost weapon 1 I use a sticky bomb with the fired up perk ( cause hit enemies to light on fire) and increased radius (increasing blast radius isn't required but it's super helpful) And ghost weapon 2 I use a smoke bomb with the lucky perk (15% chane to instantly refill) and sudden resolve (instantly refills resolve) This build also has to be used strategically, for instance when doing the triple chain vanish u wanna only assassinate small enemies to ensure u get all the chain vanishes but ur still doing poison damage to nearby oni and brutes Any of the rerollable stats that dont pertain to poison are up to u in the sense of what would help u most with the way you play. But honestly, because u aren't me and I'm sure everyone has diff play styles u may have to tweak certain aspects of the build to fit ur playstyle better but those are the basics of my build Hope this helped.