Opens the Operation Siren map and collects one-time zone rewards before repeat farming.
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WHERE & HOW TO FARM
Where to farm
Operation Siren → monthly map → unexplored explorable zones and their map objectives.
Operation Siren’s monthly map is a progression network, not just a set of repeat battles. Secure unexplored zones to reveal more of the map and collect their initial zone rewards. Once the map is open, use Strategic Search where available to automate routine clearing, then spend action points on the month’s coordinates, Strongholds, missions, and other valuable targets. A zone’s first-clear rewards and repeat farming should be treated as separate purposes.
Prepare fleets that can handle its persistent damage and multiple encounters.
Check Adaptive Tuning against the Corrosion level of the zones you plan to enter.
Keep some action points for later monthly objectives.
Enter Operation Siren and review the map for unexplored zones and visible objectives.
Start with zones appropriate to your fleet strength and current Adaptive Tuning.
Secure a zone and collect its one-time exploration and clear rewards.
Continue through newly revealed connections until the map is open.
Use Strategic Search on eligible zones when it is available and review its stop options.
Clear visible coordinates, Strongholds, daily or story missions, and other priority icons as they appear.
Check your material inventory and action point supply before deciding whether to keep sweeping zones.
Farming tips
Raise Adaptive Tuning in lower-Corrosion areas before attempting harder zones; compare the Roman numeral requirement with your tuning.
A full fleet is practical here because campaign oil efficiency is not the main constraint; assign separate roles for ordinary encounters and bosses.
Repeat, collect and use
Zone exploration rewards are primarily first-clear rewards. Some map activities and searches can be repeated, but monthly objectives and available targets depend on the current Operation Siren cycle.
Common mistakes
Spending all action points on ordinary zones early; reserve capacity for monthly missions and high-value nodes.
Entering a high-Corrosion zone below its tuning requirement; build tuning first.
Treating an already-cleared zone as if it still pays first-clear rewards; use repeat search for its ongoing value instead.
When to stop or switch
Stop opening low-priority zones once the map is accessible and monthly objectives are covered; switch to coordinate, Stronghold, mission, or shop targets that better match your needs.
