How to Get Free Orundum in Arknights

Orundum is the most important free currency in Arknights: it's what you need to pull on Headhunting, the game's gacha system, where a single pull costs 600 Orundum. Unlike other gachas, Arknights is especially generous to F2P players if you squeeze every source: daily and weekly quests, Annihilation, Paradox Simulation, the Commendations Store, and Base (RIIC) production. There's also Originite Prime, the premium currency bought with real money that can be exchanged for Orundum, but this guide focuses solely on the 100% free routes. Below we cover every community-verified method, with the amounts cited by people who squeeze the most out of their account every week, plus a realistic monthly estimate so you know how many pulls you can expect without spending a euro.

What's the fastest way to get Orundum in Arknights?

We've gathered and verified every real method for getting free Orundum, ranked from most to least profitable based on the time they take and what you can actually earn from each. No tricks, no generators — just the game's own mechanics.

~100/day Daily

Daily quests: the foundation of your F2P economy

Every day you get a set of daily quests (combat, using items, visiting the Base) that together hand out about 100 Orundum if you complete them all. It's the most consistent source and the first one any F2P Doctor should make a habit of, since it requires no extra effort beyond playing normally. Over a month that adds up to around 3,000 Orundum. Check the quest tab every time you log in so you don't leave rewards unclaimed, since they don't stack indefinitely.

~500/week Weekly

Weekly quests: the essential complement

Besides the dailies, there's a set of weekly quests that reset each week and add up to around 500 Orundum if you finish them all. They usually ask for things like completing a certain number of battles, using Sanity, or leveling up operators — tasks you're already doing if you play regularly. Over a month that translates into about 2,000 extra Orundum. Combined with the dailies, they form the core of your monthly passive income.

~1,550/week (range 1,200-1,800) Weekly

Annihilation: your biggest weekly source

Annihilation is a weekly mode where you fight off waves of enemies on a fixed map, and the Orundum you earn scales with how many enemies you defeat before time runs out. It's by far the biggest weekly source of Orundum for F2P play, and the upper cap can increase further by also completing the associated Rotating Quest. Depending on the source, the cited weekly cap ranges from 1,200 to 1,800 Orundum, with guides estimating a practical average close to 1,550. It's worth doing every week before it expires, since unclaimed progress is lost.

~600/month Weekly

Commendations Store: turn your commendations into Orundum

Every operator you lend to other Doctors in Friend or Guest mode generates Commendations (Commendation Certificates), which you redeem at the Commendations Store. On the store's first tier there are up to 6 batches of 100 Orundum available (600 total), and they restock periodically. It's an almost automatic source: you just need to lend operators and log in regularly to redeem before stock runs out.

Variable amount Daily

Base (RIIC): Factory and Trading Post

With a Factory and a Trading Post at level 3 or higher in your Base (RIIC), you can manufacture Originium Shards and trade them in, since 2 Originium Shards equal 20 Orundum through the Trading Post. Output depends on your facility levels, the operators assigned, and their production skills, so the exact amount varies a lot from account to account. It's not a huge source, but it adds up over time without requiring active combat.

200 per operator (one-time) One-time

Paradox Simulation: one-time reward per operator

Paradox Simulations are special scenarios tied to specific operators that you unlock by meeting certain requirements (rarity, trust level, etc.). The first time you complete an operator's Paradox Simulation, you get a fixed reward of 200 Orundum. Since the game adds new Paradox scenarios with every new or reworked operator, this source keeps refreshing over time, even though each individual reward is only claimed once.

Variable amount Every patch

Story chapters, events, and welcome bonuses

Every new main story chapter hands out Orundum for completing its story missions, and the same goes for chapters in temporary events and anniversary campaigns, which tend to be especially generous. On top of that, new accounts get an initial boost: rookie quests hand out a total of roughly 2,400 Orundum, and the accumulated login reward adds another 600 in the first few weeks. These amounts depend on the game's content calendar, so always check the active events board.

How much free Orundum can you get per month?

Source	Estimated amount	Frequency
Daily quests	~3,000	Daily
Weekly quests	~2,000	Weekly
Annihilation	~6,200	Weekly
Commendations Store	~600	Weekly
Estimated total	~11,800 Orundum per month	—

This figure is an estimate compiled from community guides (not an official Hypergryph number), adding up only the recurring sources in the table; it doesn't include one-time rewards like the Paradox Simulation, new-account bonuses, or the extra Orundum from events and story chapters, which can significantly boost the total in months with new content or an anniversary.

Prefer to go faster? Compare where to buy Arknights Originite Prime at the best price →

Frequently asked questions

How much Orundum do I need for one Headhunting pull?

Each individual Headhunting pull costs 600 Orundum, so you need 6,000 Orundum for a batch of ten pulls. With the F2P estimate of around 11,800 Orundum per month, that works out to roughly 18 to 19 pulls a month from free sources alone.

Is Orundum the same as Originite Prime?

No. Orundum is the currency you earn by playing (quests, Annihilation, events, etc.) and it's used directly for Headhunting pulls. Originite Prime is the premium currency you buy with real money, which can be exchanged in the store for Orundum at a fixed rate, or used to buy Originium Shards directly. This guide focuses solely on the free ways to get Orundum.

Do I lose Annihilation Orundum if I don't complete the missions that week?

Yes. The weekly Annihilation Orundum cap doesn't carry over from one week to the next: if you don't play enough battles before the week ends, the Orundum you missed out on is lost completely. That's why it's the source most worth prioritizing every week, especially since its cap can be extended by also completing the missions in the mode's associated Rotating Quest.

How to get free Orundum in Arknights