Operation Siren materials
Operation Siren zone clear
Opens the Operation Siren map and collects one-time zone rewards before repeat farming.
WHERE & HOW TO FARM
Operation Siren zone clear
Operation Siren → monthly map → unexplored explorable zones and their map objectives.
Before you go
- Unlock Operation Siren.
- 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.
Farming steps
- 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.
- 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.
Sources & fact checks
What you can get here
Open a guide to find other locations and see what the item is used for.