There's a point in Path of Exile 2 where you stop asking "Do I have enough damage." and start asking "Can I read this boss at all." The Arbiter of Ash is that point. Plenty of players will farm upgrades, flip trades, and top up on PoE 2 Currency to smooth out the rough edges, because that's how these games usually work. But a small crowd has been doing the opposite: walking into the fight with no gear on, no safety net, and no plan B, just to prove the kill is still possible if you play clean.
With equipment, you can mess up and live. Without it, you don't get that luxury. A random clip from a stray projectile, a mistimed sidestep, even a tiny hesitation when the arena gets busy, and you're back at the checkpoint. You'll notice the fight becomes less about stats and more about spacing. Where is the Arbiter facing. How long is the wind-up. What part of the arena is about to become unsafe. You end up watching shoulders and feet instead of health bars, and it's kind of wild how quickly your brain adapts.
Most of us treat Lightning Dash like an "oh no" tool. In these naked runs, it's basically the whole kit. You're using it on purpose, on rhythm. Dash through the boss to stay close without standing still. Dash out to bait a swing. Dash across a dangerous patch before it fully denies the space. The damage it contributes matters, sure, but the real value is control. If you aren't already moving when the Arbiter commits to an attack, you're late. And late means dead.
Ice Wall Explosion is the other half of the puzzle, and it's not just "drop wall, boom." You're placing walls where the boss wants to be, not where you are. That means you're predicting. You're nudging the Arbiter into a lane, then dashing to trigger the detonation while you're already repositioning for the next cycle. It turns into a loop: bait, place, pop, reset. Do it right and the arena feels manageable. Do it wrong and you've boxed yourself in with your own wall.
Most people aren't going to commit to a full no-gear kill, and that's fine. The useful takeaway is how much cleaner your play gets when you copy even a slice of the approach: dash with intent, stop over-rolling, and set your skills where the boss will step next. If you still want gear as a cushion, nobody's judging, and sometimes you just want to get the loot and move on. Still, watching a naked Arbiter kill makes you rethink what you "need," even if all you do after is tighten your build and restock PoE 2 Currency for sale for the next grind.