This Arknights beginner guide 2026 walks through what changes on 2026-10-16. The second stage of "Yesterday Sea" opens at 16:00 on October 16 and closes at 03:59 on October 23, while the Labor Ration Store stays open until 03:59 on October 30. The Abyss Cruise banner ends at 03:59 on October 23 with a 150-pull guarantee, and Clemencia joins the permanent standard banners from October 22. A sanity and LMD priority list closes the piece.More Arknights guides at gghubs.com.
Applicable version: As of the official notices dated 2026-10-16 (Arknights has no version number system, so the notice date is the anchor)
Arknights Yesterday Sea Overview: Two Stage Windows and Three Deadlines
The main event stages opened in two parts. The first part, "Rhea-Iberia," started at 12:00 on October 9, and the second part, "Our Iberia," opens after the emergency update at 16:00 on October 16 . Both parts share one event store, but they do not share the same closing date, which is the easiest trap to fall into.
Stage two opens today at 16:00 and closes on October 23
The second window is only one week long. It runs from 16:00 on October 16 to 03:59 on October 23 . If you leave it to the last two days, there is almost no room for error.
The Labor Ration Store stays open until October 30
The store runs from 12:00 on October 9 to 03:59 on October 30, a week longer than the stages. Clearing the stages does not end the event. Looking at it the other way, there is no benefit to dumping all your sanity into the store on day one.
What today's emergency update actually contains
The maintenance window is 16:00 to 16:10 on 2026-10-16, and it will force a disconnect, so finish any stage in progress first . It also preloads the permanent standard banner refresh on October 22 at 04:00 and the Distinction Certificate exchange with Nif and Bob, and fixes the Stand swap issue on Yuki Makoto plus the "Enemy of the Sea" skill on Clemencia not consuming ammo .
Arknights Salvage Plan Rewards: Five-Star Lugu and Exchange Priority
The Salvage Plan is the mission track for this event. Its rewards include the event operator Lugu at five stars, part of the Harbor Lounge furniture set, and module development materials .
Lugu only exists in this event
Lugu is obtainable only through this "Yesterday Sea" event and is not added to the Abyss Cruise banner, standard banners, or Kernel banners. Once the stages close at 03:59 on October 23, there is no other route, including token redemption.
Tokens before furniture
The store trades Future Spyglass currency for Lugu tokens, Harbor Lounge furniture, recruitment permits, the Time Series outfit "Poet's Holiday - Meteor," module materials, high-tier upgrade materials, LMD, and battle records . Tokens affect potential, which is a repeatable and permanent gain, while furniture and battle records can be filled in over time. The order that follows is Lugu tokens, then recruitment permits, then module materials, and finally outfits and furniture.
Arknights Abyss Cruise Banner: The 150-Pull Guarantee
The Abyss Cruise limited banner runs from 12:00 on October 9 to 03:59 on October 23. Clemencia takes 50 percent of the six-star rate, while de Toledo and Firewhistle each take 50 percent of the five-star rate .
How the 150-pull guarantee works
This banner counts as a standard banner, and if you go 150 pulls without a rate-up six-star, the next six-star is guaranteed to be the rate-up operator . Because 150 is a hard threshold rather than a soft pity, one more ten-pull near the line is actually efficient.
Pull now or wait for the permanent pool
Clemencia and de Toledo join the permanent standard banners from 04:00 on October 22 . The same six-star is reachable through daily recruitment a week later, though without the same rate-up. Checking how many permits you already hold before committing is worth doing, because the limited window closes at 03:59 on October 23 while the permanent pool never closes.
Arknights Base Recycling Station: Free Upgrade Materials
After the version update at 12:00 on October 9, the base gained a Recycling Station and an Activity Room.
How the Recycling Station works
The Recycling Station converts materials automatically over time and produces upgrade materials without consuming any input. At level three it unlocks a conversion efficiency boost, which lets you feed unwanted materials in to increase output further. This is passive income, and building it early is the single easiest win of the event.
Suggested order
Because the station produces continuously, it should be built before any single sanity decision. Push it to level three first, then return to stages and exchanges. A week of delay is a week of lost output.
Arknights Sanity and LMD Priorities
Sanity is the only scarce resource during the event, and the three tracks have different payoff structures.
| Priority | Task | Why | Window |
|---|---|---|---|
| 1 | Clear both stages of Yesterday Sea | Stages cannot be replayed after closing, and Lugu is event-only | Before 03:59 on October 23 |
| 2 | Finish Salvage Plan missions | Rewards include Lugu and module materials | Same window |
| 3 | Redeem from the Labor Ration Store | Runs a week longer than the stages | Before 03:59 on October 30 |
| 4 | Build the base Recycling Station | Passive output, one-time setup | Long term |
Arknights October 16 Update FAQ
When do the second-stage stages open and close?
A: They open at 16:00 on October 16 and close at 03:59 on October 23, a one-week window.
How much is the emergency maintenance compensation?
A: 200 Orundum, for every player who registered before 16:00 on 2026-10-16 .
Can Lugu be pulled from another banner?
A: No. Lugu is obtainable only through the "Yesterday Sea" event and is not added to Abyss Cruise or standard banners .
What is the Abyss Cruise pity threshold?
A: After 150 pulls without a rate-up six-star, the next six-star is guaranteed to be Clemencia .
When does the event store expire?
A: The Labor Ration Store closes at 03:59 on October 30, one week after the stages.
Arknights October Action List
- Finish any running stage before 16:00 to avoid losing progress to the forced disconnect.
- Log in after the update for 200 Orundum and open the second stage.
- Complete the Salvage Plan missions to secure Lugu.
- Redeem in the order Lugu tokens, recruitment permits, then module materials.
- Build the base Recycling Station and push it to level three.
- Spend any recruitment permits and pack vouchers before 03:59 on October 23.