Under Tides

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This event has been released and added to Record Restoration in the Global server of Arknights, and its relevant stories and operations are now available in the Archives and Terminal, respectively.
As such, the content of this page and the related subpages have been archived.
This article is about the major event/Intermezzo. For the music, see Under Tides (music).

EN Gift of the Deep Ones.png

Under Tides (SV; not to be confused with Children of Ursus) is the twelfth major event, third Intermezzo, and the first Celebration event in Arknights.

Operations

Clear 1-10 to access the SV (Under Tides) operations.

Deserted SalvientoSV-1SV-TR-1SV-2SV-3SV-4SV-5SV-6SV-7SV-ST-1SV-8SV-9SV-ST-2
Choppy RuinSV-EX-1SV-EX-2SV-EX-3SV-EX-4SV-EX-5SV-EX-6SV-EX-7SV-EX-8
Addendum
  • Choppy Ruin operations are available from the second week.
  • All SV (Under Tides) operations are worth 28 Originite Prime icon.png.

Annihilation

Operators

EN SV2 New Operators.png

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

Akafuyu icon.png
Gladiia icon.png
Kal'tsit icon.png
Skadi the Corrupting Heart icon.png

Headhunting

EN SV2 Deep Drown Lament.png

The third Celebration limited headhunting banner, Deep Drown Lament, is featured.

  • EN SV2 Song of the Sea Headhunting Permit.png
    A single Song of the Sea Headhunting Permit.png Song of the Sea Headhunting Permit can be claimed once while the Deep Drown Lament banner is up.
  • Every day, the player can perform one headhunting pull for free at the Deep Drown Lament banner. These free pulls do not transfer over to the next day, so they must be used before the daily reset.
Note: Skadi the Corrupting Heart will be added into the Celebration limited Operators' pool on Stultifera Navis.

Corrupted Iberian Record

EN SV2 Corrupted Iberian Record.png

The best Under Tides operations to farm Corrupted Iberian Records are SV-7, SV-8, and SV-9 due to their good Orirock Cluster.png Orirock Cluster, Crystalline Component.png Crystalline Component, and Integrated Device.png Integrated Device drop rates, respectively.

Try to Survive

The Try to Survive rewards can be claimed until November 11, 2021.

Mission Reward(s)
Clear SV-1.
Corrupted Iberian Record
30
Clear SV-2.
Corrupted Iberian Record
30
Clear SV-3.
Corrupted Iberian Record
40
Clear SV-4.
Corrupted Iberian Record
40
Clear SV-5.
Gladiia icon.png
Corrupted Iberian Record
40
Clear SV-5 with 3 stars.
Corrupted Iberian Record
60
Clear SV-6.
Corrupted Iberian Record
60
Clear SV-6 with 3 stars.
Portable Folding Table.png
Clear SV-7.
Corrupted Iberian Record
60
Clear SV-7 with 3 stars.
Folding Screen.png
Clear SV-8.
Corrupted Iberian Record
80
Clear SV-8 with 3 stars.
Wooden-Framed Hanging Light.png
Clear SV-9.
Corrupted Iberian Record
80
Clear SV-9 with 3 stars.
Resort Wallpaper.png
Clear SV-EX-1.
Corrupted Iberian Record
30
Clear SV-EX-2.
Corrupted Iberian Record
30
Clear SV-EX-3.
Corrupted Iberian Record
40
Clear SV-EX-4.
Corrupted Iberian Record
40
Clear SV-EX-5.
Corrupted Iberian Record
40
Clear SV-EX-6.
Corrupted Iberian Record
40
Clear SV-EX-7.
Corrupted Iberian Record
80
Clear SV-EX-8.
Corrupted Iberian Record
80
Clear SV-EX-8's Challenge Mode.
Plaque - Sink.png
Clear SV (Under Tides) operations except SV-TR-1 15 times.
Corrupted Iberian Record
40
Clear SV (Under Tides) operations except SV-TR-1 45 times.
Corrupted Iberian Record
60
Clear SV (Under Tides) operations except SV-TR-1 85 times.
Corrupted Iberian Record
80

Barter

To buy all items with limited stock from Barter, the player must spend 6340 Corrupted Iberian Record.png.

Try to Survive missions award 1080 Corrupted Iberian Record.png while the first clear rewards of SV operations award 960 Corrupted Iberian Record.png, thus requiring the player to farm 3900 Corrupted Iberian Record.png from SV operations.

Barter is open until November 11, 2021.

Ware Price Stock
Gladiia's Token
1
250 Corrupted Iberian Record.png 1
Gladiia's Token
1
300 Corrupted Iberian Record.png 1
Gladiia's Token
1
350 Corrupted Iberian Record.png 1
Gladiia's Token
1
400 Corrupted Iberian Record.png 1
Gladiia's Token
1
450 Corrupted Iberian Record.png 1
Headhunting Permit
1
150 Corrupted Iberian Record.png 3
Bipolar Nanoflake
1
100 Corrupted Iberian Record.png 5
Keton Colloid
1
45 Corrupted Iberian Record.png 10
RMA70-24
1
40 Corrupted Iberian Record.png 10
White Horse Kohl
1
35 Corrupted Iberian Record.png 10
Upholstered Wooden Chair.png
70 Corrupted Iberian Record.png 1
Tourists' Personal Effects.png
65 Corrupted Iberian Record.png 1
Retro Lantern.png
40 Corrupted Iberian Record.png 1
Ocean Tide Chandelier.png
20 Corrupted Iberian Record.png 2
Grindstone
1
13 Corrupted Iberian Record.png 10
Coagulating Gel
1
12 Corrupted Iberian Record.png 10
LMD
5K
7 Corrupted Iberian Record.png 100
Strategic Battle Record
2
5 Corrupted Iberian Record.png 25
Tactical Battle Record
2
3 Corrupted Iberian Record.png 50
Frontline Battle Record
2
1 Corrupted Iberian Record.png 120
Skill Summary - 3
1
4 Corrupted Iberian Record.png 25
Skill Summary - 2
1
2 Corrupted Iberian Record.png 50
Polyketon
1
4 Corrupted Iberian Record.png 25
Sugar
1
3 Corrupted Iberian Record.png 25
Oriron
1
3 Corrupted Iberian Record.png 25
Specialist Chip
1
6 Corrupted Iberian Record.png 5
Furniture Part
10
2 Corrupted Iberian Record.png 200
LMD
20
1 Corrupted Iberian Record.png Unlimited

Gift of the Deep Ones Login Event

EN SV2 Gift of the Deep Ones Login Event.png

During the event, login to the game for 10 days to claim the following rewards.

Day 1
LMD
30K
Supporter Chip
2
Day 2
LMD
30K
Top Emergency Sanity Potion
2
Day 3
Orundum
200
Pure Gold
25
Day 4
Originite Prime
1
Strategic Battle Record
10
Day 5
Skill Summary - 2
15
Top Emergency Sanity Potion
2
Day 6
Originite Prime
1
Recruitment Permit
5
Day 7
LMD
30K
Orundum
200
Day 8
Chip Catalyst
1
Top Emergency Sanity Potion
2
Day 9
Originite Prime
1
Strategic Battle Record
15
Day 10
Professional
Expedited Plan
5

Store

EN SV2 Packs Store.png
  • ID Info Update Card Packs added into the Packs Store.
  • The following packs are available in the Packs Store until November 18, 2021:
Pack Content Price
Rhodes Island Headhunting Pack
Top Operator Transfer Permit
1
Ten-roll Headhunting Permit
1
US$29.99
Rhodes Island Resource Pack
Originite Prime
90
Ten-roll Headhunting Permit
1
LMD
200K
Chip Catalyst
4
Strategic Battle Record
30
Tactical Battle Record
50
Skill Summary - 3
20
Skill Summary - 2
50
US$49.99
Addendum
Both packs can only be purchased once per account.

Outfits

EN SV2 New Outfits 1.png
EN SV2 New Outfits 2.png

The following outfits are available in the Outfit Store:

New
Black Wave
Burst Feline
Dark Cloud
Forgemaster
Fugue
Gorgeous Flower
Speechless Sound
Tested One

Players who had purchased Skadi's Waverider WR04 outfit before the event will receive one Outfit Voucher.png Outfit Voucher (given as an in-game mail) due to the release of Skadi the Corrupting Heart.

Furniture

EN SV2 Iberian Resort Town.png

The Iberian Resort Town furniture theme is available; some of its parts are awarded from completing Try to Survive missions while others are available in Barter and Furniture Store.

Miscellaneous

Operator Record/Paradox Simulation

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

Operator Operator Record(s) Paradox Simulation
Earthspirit icon.png
Extra Work A Line for Three
Mountain icon.png
Unexpected Annoyance Immovable as His Name
Nightingale icon.png
A Song and a Blue Feather Impregnable Illusion
Savage icon.png
  1. Painful Reversal
  2. No Less Than A "Pie"
Ha! Through to the Front!
THRM-EX icon.png
Scorching-Hot Assault! Not added

Cautus Valley Mining Area

EN SV2 Cautus Valley Mining Area.png

During the event, the player will receive one mining operation every day, which can be used to receive Orundum.png Orundum from three different types of Originium deposits in Cautus Valley Mining Area, selected at random in each use:

Deposit Value
Originium Crude Ore 300 Orundum icon.png
Originium Ore 400 ~ 1700 Orundum icon.png
Originium Vein 1800 Orundum icon.png
  • The amount of Orundum received will only be shown after the mining operation is completed.
  • If the mining operation does not reach an Originium Vein, the next mining operation(s) are more likely to reach it. If an Originium Vein was not reached by the end of the event, then the last mining operation is guaranteed to reach an Originium Vein.
  • Unused mining operations do not transfer over to the next day, so they must be used before the daily reset.