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EN Operation Originium Dust banner.png

Operation Originium Dust (OD) is the tenth major event and ninth Side Story in Arknights that also acts as a crossover with Tom Clancy's Rainbow Six Siege and includes the first Multivariate Cooperation event, Defence Protocols.

Release date
CN March 9, 2021 ~ March 23, 2021
Global August 18, 2021 ~ September 1, 2021
TW September 9, 2021 ~ September 23, 2021

Operations

Clear 1-10 to access OD operations.

Task Record
Para Bellum

Para Bellum operations are available in the second week.

All OD operations are worth 28 Originite Prime icon.png.

Operators

The following Operators will gain 50% more Trust (except from Annihilation):

Headhunting

The Attack, Defence, Tactical Collide limited crossover headhunting banner is featured.

Rhodes Island Resource Allocation Certificate

All OD operations award Rhodes Island Resource Allocation Certificate.png Rhodes Island Resource Allocation Certificate when cleared, with more being given when the player clears the operation for the first time. Para Bellum operations only awards R.I. Resource Allocation Certificates when cleared for the first time. Engineering Test Indicators (Defence Protocols) missions also award R.I. Resource Allocation Certificates when completed.

R.I. Resource Allocation Certificates can be exchanged for various items at the Commissary.

The best Task Record operations to farm R.I. Resource Allocation Certificates are OD-7 and OD-8 due to their high Manganese Ore.png Manganese Ore and Grindstone.png Grindstone drop rates, respectively.

Combat Report

The Combat Report rewards can be claimed until September 8, 2021.

Mission Reward
Clear OD-1.
Rhodes Island Resource Allocation Certificate.png
20
Clear OD-2.
Clear OD-3.
Rhodes Island Resource Allocation Certificate.png
30
Clear OD-3 with 3 stars.
Portable Generator.png
Clear OD-4.
Rhodes Island Resource Allocation Certificate.png
30
Tachanka icon.png
Clear OD-5.
Rhodes Island Resource Allocation Certificate.png
30
Clear OD-5 with 3 stars.
Portable Turret.png
Clear OD-6.
Rhodes Island Resource Allocation Certificate.png
60
Clear OD-6 with 3 stars.
Adhesive Stun Grenade.png
Clear OD-7.
Rhodes Island Resource Allocation Certificate.png
60
Clear OD-7 with 3 stars.
Exhibition Room Main Ceiling Light.png
Clear OD-8.
Rhodes Island Resource Allocation Certificate.png
60
Clear OD-8 with 3 stars.
Destructible Walls.png
Clear OD-EX-1.
Rhodes Island Resource Allocation Certificate.png
20
Clear OD-EX-2.
Portable Shield.png
Clear OD-EX-3.
Rhodes Island Resource Allocation Certificate.png
30
Clear OD-EX-4.
Clear OD-EX-5.
Clear OD-EX-6.
Clear OD-EX-7.
Rhodes Island Resource Allocation Certificate.png
80
Clear OD-EX-8.
Clear OD operations except OD-TR-1 15 times.
Rhodes Island Resource Allocation Certificate.png
40
Clear OD operations except OD-TR-1 45 times.
Rhodes Island Resource Allocation Certificate.png
60
Clear OD operations except OD-TR-1 85 times.
Rhodes Island Resource Allocation Certificate.png
80

Commissary

To buy all items with limited stock from the Commissary, the player must spend 6114 Rhodes Island Resource Allocation Certificate.png.

Combat Report missions give up to 790 Rhodes Island Resource Allocation Certificate.png while first clear rewards of OD operations give up to 700 Rhodes Island Resource Allocation Certificate.png and Defence Protocols' Engineering Test Indicators missions award up to 1460 Rhodes Island Resource Allocation Certificate.png, thus requiring the player to farm an additional 3164 Rhodes Island Resource Allocation Certificate.png from OD operations.

The Commissary is open until September 8, 2021.

Item Price Stock
Tachanka's Token.png
1
200 Rhodes Island Resource Allocation Certificate.png 1
240 Rhodes Island Resource Allocation Certificate.png
280 Rhodes Island Resource Allocation Certificate.png
320 Rhodes Island Resource Allocation Certificate.png
360 Rhodes Island Resource Allocation Certificate.png
Headhunting Permit.png
1
150 Rhodes Island Resource Allocation Certificate.png 3
D32 Steel.png
1
100 Rhodes Island Resource Allocation Certificate.png 5
Oriron Block.png
1
45 Rhodes Island Resource Allocation Certificate.png 10
Grindstone Pentahydrate.png
1
40 Rhodes Island Resource Allocation Certificate.png
White Horse Kohl.png
1
35 Rhodes Island Resource Allocation Certificate.png
Signal Disruptor.png
55 Rhodes Island Resource Allocation Certificate.png 1
Reinforcement Debris.png
45 Rhodes Island Resource Allocation Certificate.png
Projectile Interception System.png
Wall-mounted Newspaper Rack.png
Surveillance Camera.png
30 Rhodes Island Resource Allocation Certificate.png
Throwable Discharge Device.png
Exhibition Room Ceiling Light (Bright).png
25 Rhodes Island Resource Allocation Certificate.png 2
Exhibition Room Ceiling Light (Dim).png
Item Price Stock
RMA70-12.png
1
15 Rhodes Island Resource Allocation Certificate.png 10
Coagulating Gel.png
1
12 Rhodes Island Resource Allocation Certificate.png
LMD.png
5K
Rhodes Island Resource Allocation Certificate.png 100
Strategic Battle Record.png
2
Rhodes Island Resource Allocation Certificate.png 25
Tactical Battle Record.png
2
Rhodes Island Resource Allocation Certificate.png 50
Frontline Battle Record.png
2
Rhodes Island Resource Allocation Certificate.png 120
Skill Summary - 3.png
1
Rhodes Island Resource Allocation Certificate.png 25
Skill Summary - 2.png
1
Rhodes Island Resource Allocation Certificate.png 50
Device.png
1
Rhodes Island Resource Allocation Certificate.png 25
Oriron.png
1
Rhodes Island Resource Allocation Certificate.png
Orirock Cube.png
1
Rhodes Island Resource Allocation Certificate.png
Guard Chip
1
Rhodes Island Resource Allocation Certificate.png 4
Furniture Part.png
10
Rhodes Island Resource Allocation Certificate.png 200
LMD.png
20
Rhodes Island Resource Allocation Certificate.png

Pinpoint Accuracy Login Event

During the event, login to the game for 7 days to claim the following rewards.

Day 1
Top Emergency Sanity Potion.png
1
LMD.png
10K
Day 2
Scope.png
Skill Summary - 1.png
30
Day 3
Top Emergency Sanity Potion.png
1
Strategic Battle Record.png
10
Day 4
Orundum.png
200
Orirock Cube.png
6
Day 5
Top Emergency Sanity Potion.png
1
Skill Summary - 2.png
20
Day 6
Contested Objective.png
Originite Prime.png
1
Day 7
Elite Forces Headhunting Permit.png
Chip Catalyst.png
1

Store

The following three packs are available in the Packs Store:

Item Content Price
Position Defense Pack
LMD.png
50K
Tactical Battle Record.png
50
Guard Chip
4
Oriron.png
4
Sugar.png
3
$0.99
Common Tactical Pack
Originite Prime.png
13
Headhunting Permit.png
1
LMD.png
100K
Strategic Battle Record.png
25
Defender Chip
4
Specialist Chip
4
Sugar.png
5
Polyester.png
5
Orirock Cube.png
4
Device.png
2
$6.99
Assault Elite Pack
Originite Prime.png
24
Ten-roll Headhunting Permit.png
2
LMD.png
60K
Strategic Battle Record.png
30
Sniper Chip
5
Orirock Cube.png
11
Oriron.png
5
Furniture Part.png
1K
$29.99
Note: All three packs can only be purchased once per account.

Outfits

The following outfits are available in the Outfit Store:

New

Furniture

The Special Equipment Exhibition Room furniture set is available; some of its parts are awarded as the first drop of OD operations and completing Combat Report missions while others are available in the Commissary and Furniture Store.

In addition, the Walter Interior Sensations furniture set now replaces the Rhodes Island HR Office set as lucky drops in most operations, which is now available in the Furniture Store.

Miscellaneous

Operator Record/Paradox Simulation

New Operator Records/Paradox Simulations are added for the following Operators:

Operator Operator Record(s) Paradox Simulation
Old Friends in Foreign Places Enemy Ambush Control
  1. Apple Pie Party, Now Preparing!
  2. Still Waiting
Sword and Shield
Refurbishment Plans Floral Fragrance
The Day We Left Home Flame Net

ID Info Update Card

All players will receive an ID Info Update Card.png ID Info Update Card (as an in-game mail) on August 18, 2021.

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