Arc Raiders Avian Alarm Guide

The Arc Raiders Avian Alarm project is the new limited-time Raider project that shipped with the Riven Tides update on April 28, 2026. In lore terms, you are building a makeshift seismic-and-atmospheric security system using birds as living tremor sensors. Yes, birds. The apocalypse broke the technology budget, apparently.

You have until May 26, 2026 to complete all five stages. Miss the deadline and you miss everything: Embark has confirmed this project expires with a countdown, unlike the silent endings of the High-Gain Antenna and Weather Monitor System projects before it.

The full reward stack for completing all stages: Dockmaster's Detector, Anvil IV, Anvil Splitter, Gel Patches, Hotel Keycard No. 311, Birdhouse backpack attachment, Fist in Air emote, Acoustic Guitar, and 250 Raider Tokens. Plenty of reasons not to procrastinate: not that procrastination has ever stopped anyone.

All Stages At A Glance

For the people who refuse to read past the table: here is everything. The rest of this guide exists for the people who then inevitably ask where to find agave.

Initial Flock Intake

No materials. Just action. Go to the Riven Tides Seabed buoy location and lay a bird trap on one of the orange buoys. The buoy is large, bright orange, and sits in the flat seabed area. If you cannot find an enormous orange float in shallow water, please reconsider your relationship with games that require navigation.

You do not need to extract to register the completion. Return to the Projects tab in Speranza and collect your Dockmaster's Detector: your entry ticket to Beachcombing, the new map condition where you sweep the sand for buried loot with said detector.

The buoy has multiple interaction spots around it. Use any of them. The game will recognize the achievement; it is more forgiving than you deserve.

Preliminary Signal Birds

This is where the Last Resort event ship models make their first required appearance, and where some players will spend three days learning that RNG means random.

Materials

• 7x Tick Pods: kill Ticks
• 20x Canisters: industrial zones, everywhere
• 12x Moss: swampy areas, Dam, old buildings
• 5x Twilight Compass Ship Model: trinket, RNG

Rewards

• Heavy Gun Parts Blueprint
• 3x Surge Coil
• 25 Raider Tokens

The Twilight Compass is a common-tier ship model from the Last Resort event. Check lockers on any map, residential areas, and apartment blocks in Buried City. It will show up: eventually. Try not to lose your mind over it.

Secondary Validation Birds

Comet Igniters are the standout item here. They only drop from Comets: and only if you kill the Comet without letting it explode. Congratulations, the game is now punishing impatience. Fertilizer is best farmed in the hydro and swamp areas at Dam, inside the growing pods. Rusted Tools are scattered across industrial and tech zones all over Dam without much drama.

Materials

• 3x Comet Igniter: from Comets, no explosions allowed
• 10x Fertilizer: Dam hydro/swamp pods
• 8x Rusted Tools: industrial/tech areas
• 5x Velocity Ship Model: trinket, RNG

Rewards

• 1x Anvil IV weapon
• 1x Anvil Splitter
• 50 Raider Tokens

Heightened Alert Birds

The Vaporizer Regulator farming requirement is where casual players discover that the project requires engaging with the new enemy type. The Vaporizer only drops its Regulator from the Vaporizer enemy: no workarounds, no substitutes. The good news: Embark buffed Vaporizer spawns with this update, so they now appear across more maps and more map conditions.

Materials

• 1x Vaporizer Regulator: kill a Vaporizer
• 3x Water Filter: tech and industrial zones
• 8x Agave: outdoor areas, edges of Buried City (looks like aloe)
• 5x Sirena Dorata Ship Model: pink rarity, RNG

Rewards

• Gel Patches (Face Style cosmetic)
• Riven Tides Hotel Keycard No. 311
• 50 Raider Tokens

The Sirena Dorata is a pink-rarity ship model: meaningfully rarer than the common and uncommon ships in previous stages. Budget additional time. The Hotel Keycard No. 311 unlocks a room in the new Panorama Azzurro hotel on Riven Tides. What's inside? Presumably something worth the effort of being alive this far into the project.

The final stage. The Leviathan's Crown legendary ship model is a legendary-tier trinket: the rarest item in the entire Last Resort event. There is no guaranteed spawn location. There is no reliable farm spot. There is only the relentless searching of every trinket location across every map until the universe takes pity on you.

The Leviathan's Crown is legendary rarity. Stash it the moment you find it. Extract safely. Do not die with it in your pocket.

Materials

• 2x Turbine Compressor: from Arc Turbine enemies only
• 3x Red Coral Jewelry: residential trinket locations
• 4x Roots: forested areas
• 1x Leviathan's Crown Ship Model: legendary, RNG

Rewards

• Birdhouse Backpack Attachment
• Fist in Air Emote
• Acoustic Guitar
• 100 Raider Tokens

Trinket hunting for Red Coral Jewelry and the Leviathan's Crown follows the same logic: avoid industrial and ARC-related zones. Head to old-world residential spots: the village on Blue Gate, apartment blocks around Buried City, departure lounges and suitcase areas at Spaceport. These places existed before the invasion. The loot reflects that.