Anime Expeditions Expedition Mode and Anvil Stat Reroll Guide

Expedition Mode is Anime Expeditions' level 20 endgame system, a four-player cooperative mode built around escorting a payload through a randomly generated grid of nodes while buying Anvil stat rerolls at checkpoints along the way. It's the account's main progression loop once Story acts stop being a meaningful challenge, and it runs on three separate tracks of investment at once: permanent Research Lab upgrades, Building tiers, and the difficulty you choose each run.
This guide covers how a run actually plays out, what each of the 8 Buildings does, the full 18-node Research Lab tree, and the Anvil system's 15 stat types in detail, since Anvils are the part of the mode most new expeditioners misunderstand.
Unlocking and running Expedition Mode
Expedition Mode unlocks at player level 20, with the specific gate being a clear of School Grounds Expedition on Normal Act 1. Once unlocked, it matchmakes lobbies of up to 4 players and starts every run at the Expedition Center.
From there the game generates a fresh node grid, including Elite lanes and a Boss chamber, and your team escorts a slow-moving payload from node to node. Checkpoints along the route are where you stop to buy Stat Anvils, so a run plays out as a build-as-you-go loadout rather than a fixed team comp fight decided before you queue. The grid regenerates every run, so no two Expeditions play out in the same order.
The 8 Buildings and what to prioritize
Eight Buildings ring the Expedition Center, and upgrading them is the main long-term reason to keep running the mode instead of only farming Story acts.
- Expedition Center: the hub building that gates every other upgrade and controls the run itself. Upgrade this first since it blocks progress everywhere else.
- Research Lab: spends Expedition Coins on the 18-node permanent upgrade tree covered below. Prioritize the Economy branch early since faster income compounds into every other building.
- Training Grounds: parks idle units to bank Unit EXP and Worthiness on a 90-second tick, up to a 24-hour session. Assign benched units here instead of leaving them doing nothing.
- Gold Mine: burns Expedition Fuel to passively generate Gold.
- Resource Drill: burns Expedition Fuel to mine Geodes, which crack into materials and equipment tokens.
- Armory: rerolls equipment stats, crafts new gear from Scrap, and dismantles unwanted equipment.
- Quest Board: runs a 10-step weekly milestone track paying Gem, Gold, Equipment Lock, Equipment Reroll and Trait Reroll rewards, resetting every 7 days regardless of runs completed.
- Expedition Shop: sells materials, resources and reroll tokens for Expedition Coins on a rotating stock.
The Research Lab: 18-node tree explained
The Research Lab holds 18 permanent upgrade nodes split across four branches plus a single root unlock. Every purchase carries forward into every future run, making it the account's main long-term investment in the mode, and higher tiers in every branch require the previous tier as a prerequisite.
Economy branch (E1 to E6, 6 tiers): boosts income and reward stacking on every run.
Payload branch (T1 to T5, 5 tiers): extends payload durability and travel speed.
Power branch (P1 to P4, 4 tiers): raises unit output specifically on Expedition maps.
Progression branch (G1 and G2, 2 tiers): speeds up account and milestone progression from Expedition runs.
Map Unlock (root node): opens the rest of the tree once the Expedition Center itself is upgraded.
The Anvil system: all 15 stat types
Every checkpoint sells Stat Anvils, the run's core power spike. Buying one rolls a stat from a pool of 15, Damage, Range, SPA, Crit Chance, Crit Damage, Element Damage, Archetype Damage, DoT Damage, Summon Damage, Summon Health, Payload Health, Follow-Up Damage, EXP Multiplier, Yen Generation and Bonus Match Rewards, and a rarity that determines how strong the roll is.
Rarity weights are Epic 60%, Legendary 30%, Mythic 10%, plus a rare bonus Rainbow tier. Strength scales with rarity: an Epic Damage anvil lands in a 1% to 4% range, Legendary jumps to 5% to 7%, Mythic reaches 8% to 10%, and Rainbow pushes as high as 11% to 13%, with SPA, Range and EXP Multiplier each using their own separate scaling. A handful of stats are hard capped regardless of how many Anvils you stack: SPA caps at 50% total reduction and Summon Health caps at 200%, preventing infinite stacking from breaking the mode's balance.
Anvil bonuses only last for the run they were bought in and vanish the moment it ends, unlike Ascension's permanent Mythic-unit stat boosts or Stat Potential's permanent grade rerolls. Every fresh Expedition run starts with a completely blank Anvil slate, no matter how invested your account already is.
Difficulty tiers: Normal, Hard, Nightmare
Every run starts with a choice between three ascending difficulty tiers, affecting both how hard enemies hit and how much every node pays out.
Normal: resistance ranges 10 to 20, enemies hit for 5 damage per attack, rewards carry a 1.25x multiplier, no forced enemy modifiers.
Hard: resistance ranges 20 to 45, enemies hit for 7 damage per attack, rewards carry a 1.5x multiplier, every node adds one random enemy modifier.
Nightmare: resistance ranges 30 to 60, enemies hit for 10 damage per attack, rewards carry a 1.75x multiplier, every node adds two random enemy modifiers, the highest tier currently in the mode.
Start on Normal until your team can clear it without losing the payload, then move up. A wipe on Hard or Nightmare pays out nothing at all, so climbing too early usually loses more than the higher multiplier gains you.
Building an offense or defense Anvil loadout
Because Anvils are a per-run choice, decide early whether that run is leaning offense or defense and buy toward it at every checkpoint instead of grabbing whatever comes up first. An offense build stacks Damage, Crit Damage and Element Damage Anvils for a glass-cannon clear speed; a defense build stacks Payload Health and Summon Health Anvils to survive longer routes and tougher checkpoints. Bonus Match Rewards and EXP Multiplier Anvils sit outside both categories as a meta-progression pick, boosting the value of the run itself rather than combat performance.
Node rewards: Elite vs Boss
Elite nodes roll 8 to 11 of one resource from Map Resource, Expedition Coin, Equipment Scrap or Expedition Fuel, plus a guaranteed 100 Payload EXP, 40 Player EXP and 2,500 to 5,000 Yen.
Boss nodes draw three separate Expedition Coin rolls, add a guaranteed 5 to 8 Map Resource, 150 Payload EXP, 40 Player EXP, 5,000 to 10,000 Yen, and one guaranteed Expedition Tome, the mode's premium currency for its highest-tier unlocks.
FAQ
How do I unlock Expedition Mode in Anime Expeditions?
Reach player level 20 and clear School Grounds Expedition on Normal Act 1. After that it appears as a matchmade mode for up to four players.
What is the Anvil in Expedition Mode?
A per-run stat reroll bought at Expedition checkpoints. It rolls one of 15 stat types and a rarity (Epic, Legendary, Mythic, or the rare Rainbow tier), and the bonus only applies for the run it was purchased in.
How many Buildings does Expedition Mode have?
8: Expedition Center, Research Lab, Training Grounds, Gold Mine, Resource Drill, Armory, Quest Board and Expedition Shop.
What is the max difficulty in Expedition Mode?
Nightmare, with enemy resistance scaling from 30 to 60, 10 damage per hit, two random enemy modifiers per node and a 1.75x reward multiplier.
Do Anvil bonuses carry over between Expedition runs?
No. Anvil bonuses reset completely at the end of every run, unlike the Research Lab tree and Building tiers, which persist permanently between runs.
How does the Research Lab tree work?
18 permanent upgrade nodes split into Economy (6 tiers), Payload (5 tiers), Power (4 tiers), Progression (2 tiers) and a Map Unlock root, purchased with Expedition Coins. Higher tiers in each branch require the previous tier first.
Which Building should I upgrade first?
The Expedition Center, since it gates every other Building's upgrades. After that, prioritize the Research Lab's Economy branch, since faster income compounds into how quickly the rest of your Buildings become worth investing in.
Does Expedition Mode give Gems?
Not directly. Node clears pay Expedition Coins, Expedition Fuel, Map Resource, Equipment Scrap and Yen instead, so it's better treated as the game's equipment and endgame progression loop than a Gem farming route.
Source-checked
This guide is written and source-checked by GuideDex staff against in-game testing and primary sources. updated · GuideDex staff. Report a correction.