Last Beacon: Survival Lighthouse Level 10 Upgrade Guide

To start the Lighthouse Level 10 upgrade in Last Beacon: Survival, you must raise your core auxiliary buildings—specifically resource warehouses and processing workshops—to Level 9 and expand your storage cap to hold the required construction materials. Completing this upgrade unlocks Tier 3 workshop upgrades, widens your buildable raft territory, and expands your offshore scouting range.

Prerequisites and Resource Preparation

The Lighthouse cannot be upgraded independently of your supporting base infrastructure. If secondary facilities lag behind, the upgrade prompt remains locked.

Fulfill Building Prerequisites: Check the Lighthouse upgrade interface for red prerequisite tags. Upgrade any lagging Level 8 processing benches and storage structures to Level 9 before saving resources for the central hub.
Raise Storage Limits Early: Upgrading timber yards and metal containers is necessary so your maximum resource capacity exceeds the Level 10 entry cost.
Batch-Refine Building Materials: Process raw wood, scrap, and plastic into structural planks and reinforced sheets in advance to prevent production delays.
Save Consumable Resource Packs: Keep reward crates and survival packs unopened in your personal bag until you are ready to start construction. Packaged items bypass warehouse storage caps and are protected from base raids.

Base Defense During the Construction Timer

The Level 10 upgrade carries an extended construction timer. Because the Lighthouse anchors your platform, base defenses must hold while your primary builder queue is occupied.

Fortify Outer Edges: Line exposed raft perimeter tiles with metal mesh or wooden spikes to prevent reef sharks and aquatic mutants from severing structural connections.
Align Defensive Coverage: Position automated turrets and hero posts facing the most vulnerable perimeter angles before initiating the build.
Stock Manual Repair Supplies: Craft repair hammers and hold a reserve of basic wood planks in your bag. If predators damage an edge tile during the upgrade, repair it manually to avoid canceling or disrupting the active construction queue.

Level 9 vs. Level 10 Feature Comparison

Upgrading your Lighthouse advances your maximum platform capacity across several core functions:

Feature Area	Level 9 Capability	Level 10 Advancement
Buildable Territory	Restricted perimeter grid	Expanded outer boundary tiles
Facility Tier Caps	Tier 2 crafting and refining	Tier 3 workshop upgrades
Defensive Capacity	Basic traps and barricade slots	Advanced turrets and watchposts
Scouting Range	Standard local sea sweep	Extended radar for offshore salvage

Next Steps After Reaching Level 10

Once construction finishes, immediately reconfigure your floating base layout to match your new boundaries:

Shift Interior Facilities Inward: Move vital, non-combat structures—such as beds, freshwater distillers, and crop plots—into the central zone closest to the Lighthouse.
Push Production and Defense Outward: Move workshops, storage containers, and combat emplacements toward the newly expanded outer boundary tiles.
Queue Tier 3 Workstation Upgrades: Begin upgrading your primary crafting benches to Tier 3 to unlock higher-grade survivor armor, upgraded tools, and improved water purification systems.