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As such, the content of this page and the related subpages have been archived.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 third Intermezzo and 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
Additional information
  • Choppy Ruin operations are available from the second week.
  • All SV (Under Tides) operations are worth 28 Originite Prime icon.png.

Additions

New devices: Emergency Aid Building

New enemies:

Normal
Automatic Maintenance Drone
Shell Sea Runner
Nourished Runner
Deep Sea Slider
Nourished Slider
Ridge Sea Spitter
Nourished Spitter
Floating Sea Drifter
Nourished Drifter
Elite
The First To Talk
Basin Sea Reaper
Nourished Reaper
Pocket Sea Crawler
Nourished Crawler
Primal Sea Piercer
Nourished Piercer
Boss
Sal Viento Bishop Quintus

Annihilation

EN SV2 Flooded Seashore.pngEN SV2 Annihilation Hypothetical Targets.png

Operators

EN SV2 New Operators.png

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

Akafuyu
Gladiia
Kal'tsit
Skadi the Corrupting Heart

Headhunting

EN SV2 Deep Drown Lament.pngEN SV2 Song of the Sea Headhunting Permit.png

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

  • A single Song of the Sea Headhunting Permit 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

Try to Survive

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

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

Barter

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

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

Barter is open until November 11, 2021.

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

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.png
30K
Supporter Chip.png
2
Day 2
LMD.png
30K
Top Emergency Sanity Potion.png
2
Day 3
Orundum.png
200
Pure Gold.png
25
Day 4
Originite Prime.png
1
Strategic Battle Record.png
10
Day 5
Skill Summary Volume 2.png
15
Top Emergency Sanity Potion.png
2
Day 6
Originite Prime.png
1
Recruitment Permit.png
5
Day 7
LMD.png
30K
Orundum.png
200
Day 8
Chip Catalyst.png
1
Top Emergency Sanity Potion.png
2
Day 9
Originite Prime.png
1
Strategic Battle Record.png
15
Day 10
Professional
Expedited Plan.png
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.png
1
Ten-roll Headhunting Permit.png
1
US$29.99
Rhodes Island Resource Pack
Originite Prime.png
90
Ten-roll Headhunting Permit.png
1
LMD.png
200K
Chip Catalyst.png
4
Strategic Battle Record.png
30
Tactical Battle Record.png
50
Skill Summary Volume 3.png
20
Skill Summary Volume 2.png
50
US$49.99
Both packs can only be purchased once per account.

Outfits

EN SV2 New Outfits 1.pngEN 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 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
Extra Work A Line for Three
Mountain
Unexpected Annoyance Immovable as His Name
Nightingale
A Song and a Blue Feather Impregnable Illusion
Savage
  1. Painful Reversal
  2. No Less Than A "Pie"
Ha! Through to the Front!
THRM-EX
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 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.

Media

Arknights Animation PV - Under Tides
Arknights - Under Tides Event Teaser
Arknights Official Trailer - Under Tides

Trivia

  • The Chinese title is a pun to the first part of this Chinese proverb 覆巢之下无完卵 (lit. "no eggs remain intact when the nest overturns") which means "no individual can escape from the calamity its group is suffering,"[1] with a slight change of a homophonic character from 巢 ("nest") to 潮 ("tide").
  • Under Tides operations are prefixed with "SV", which stands for "Sal Viento" (where the event's plot takes place). However, Children of Ursus operations are also prefixed with "SV", which stands for "Survivor" and can lead to confusion for SV-1 to SV-7.
    • This is the first and only case of an event's operation prefixes overlapping with another's.

References

  1. 覆巢之下無完卵 (Wiktionary)