Acheron's Max Level Upgrade Guide: All Materials You Need to Farm in 2026
Acheron ascension materials and Trace upgrade guide for Honkai: Star Rail—maximize your Nihility super-carry with efficient farming tips.
If you're reading this in 2026, chances are you've just pulled Acheron and now you're staring at the mountain of materials you'll need. Relax – I've been exactly where you are. As a Nihility super-carry, Acheron can vaporize entire enemy waves with a single ultimate, but only if you invest in her properly. This guide walks you through every single material you'll need to max her level and fully upgrade her Traces, based on my own grinding adventures. Grab a coffee, queue up your podcast, and let's dive in.

📦 The Complete Material Checklist
No surprises here: Acheron will gobble up resources just like any other 5-star unit. Before I break down where to farm each item, here's the big picture of what you'll need to hoard:
-
Dream Collection Component and its upgraded versions (Dream Flow Valve and Dream Making Engine)
-
Shape Shifter's Lightning Staff
-
Fiery Spirit, Starfire Essence, and Heaven Incinerator
-
Past Evils of the Borehole Planet Disaster
-
Tracks of Destiny
I strongly recommend bookmarking this list before you start. Nothing stings more than running out of Shape Shifter's staffs at level 70 with no Trailblaze Power left.

⚡ Ascension Materials & Where to Find Them
You'll burn through Shape Shifter's Lightning Staff for each ascension threshold. This one comes from the Stagnant Shadow: Shape of Fulmination in Stargazer Navalia (yes, it's still there in 2026). The fight isn't too punishing, but bring a sturdy sustain character to make the auto-battle runs safe.
For the Dream Collection Components, get ready to spend a lot of time in Penacony. Any enemy from the Dreamjolt Troupe family drops these – think the sassy Lordly Trashcans, those marching drummers, and the infamous angry chef dinosaurs. The quickest route I use is to teleport to the Golden Hour dreamscape and loop around the plaza; you'll get about fifteen groups per reset. Higher-tier versions can be synthesized, so never let those green components sit unused.

🌀 Trace Upgrade Materials
Here's where the real grind begins. Acheron's Trace nodes scale incredibly well, granting free Lightning DMG and CRIT DMG boosts. You'll want everything unlocked – no skipping.
The main Trace materials are Fiery Spirit, Starfire Essence, and Heaven Incinerator. These all drop from the Bud of Nihility Crimson Calyx in the Alchemy Commission (Xianzhou Luofu). Even in 2026, this remains the most efficient spot. I usually run it at max difficulty and let my farming team auto-clear while I sort relics. Expect to spend several days of stamina here if you want to max all three of her main skills and all bonus abilities.

Which Traces to Upgrade First
Don't waste precious materials. Here's my recommended priority order, from most impactful to least:
-
Ultimate – This is where Acheron's identity lives. Max it ASAP.
-
Talent – The stacking DMG% boost matters more than you think.
-
Skill – Needed for energy generation and AOE damage.
-
Basic ATK – Honestly? Keep it at level 1. She doesn't use it in a proper rotation.
Following this order saved me a ton of Tears of Dreams and sanity. You'll instantly feel the power spike with a leveled Ult.
🕷️ Weekly Boss Material and Tracks of Destiny
Past Evils of the Borehole Planet Disaster drops from the Echo of War: Scourge of the Abyss inside the Seclusion Zone of Herta Space Station. Yep, that means fighting Skaracabaz, the Emanator of Propagation. This bug is still a pain in 2026 if you're under-prepared. I always bring a Quantum or Ice DPS to shred its toughness bar quickly.
As always, you're capped at three runs per week unless you spend reserved power, so plan ahead. You'll need this material for the highest Trace levels and for unlocking the final Ascension bonus. Stock up on Tracks of Destiny too – they come from events, the Embers Exchange shop, and the Simulated Universe. I never let my Track stash drop below five.

🧩 Extra Tips for Efficient Farming
-
Synthesize smartly: Whenever you have surplus Dream Collection Components, use the Omni-Synthesizer to craft the purple versions. It saves hours of overworld farming.
-
Use assignments: Send your characters on the daily commission for Nihility Calyx materials. Even the passive income adds up over a week.
-
Plan stamina refreshes around double-drop events: If 2026 follows the same pattern as last year, we'll get limited-time Calyx double yield events. Save your Fuel for those.

💬 Final Thoughts
Yes, the farm is real. No, you don't need to rush. Acheron is still a top-tier Nihility hypercarry in 2026, and every Trace you unlock permanently boosts her damage ceiling. Clocking in at max level with fully capped Traces turns her into an absolute menace – I've seen mine casually delete Memory of Chaos stages without a harmony unit. Stick to the farming route I outlined, focus on her Ultimate first, and you'll be rewarded with one of the most satisfying DPS characters in the game.
Now if you'll excuse me, I've got another batch of Dreamjolt Troupe dinosaurs to delete for their valve drops.