The testing is base on Sage duo weapon gameplay in stage 5 agony mode cuz that's the maximum difficulty in game atm.
Tier 0: (Completely broken)
Kugelblitz : With base atk speed this skill shred everything off screen period. Kinda feel like a bug since the scaling doesn't really make sense for the shock wave atk speed.
Tier 0.5 : (can carry the whole run very early into the stage)
Spectral Fist: Rough beginning, but once you get consecutive punch and base atk speed, can clear the screen clean and shred bosses
Morning Star: Pretty busted weapon, strong from beginning til end. Go to weapon for Sage if you want chill run.
Arcane Rift: Decent clear at beginning followed by op screen shredder end game. Causes huge lag though.
Tier 1: (Can easily clear stages but have drawbacks)
Spirit Warrior: Outside of rough beginning and couple bugs, very solid choice once you scale it up. Good clear and bossing.
Transfixion: The raw damage aspect of this weapon is surprisngly strong. Can clear screen clean and shred bosses, plus a very good support weapon too. Great go-to weapon for any scenario.
Arcane Splinter: Very weak at beginning and requires deep investment til late game to shine. Turn screen shredder in end game. Scale force/ multistrike/ area to be strong.
Meteor Strike: At end game can reach arcane splinter level of screen clear and massive damage if you scale enough area/multi-hit. Solid weapon.
Phantom Needle: Lack a bit of aoe , but can pull its weight once build up, plus it's one of the best weapons to bring at beginning to help other abilities get through early stage.