Coal
Used to upgrade seasonal structures and operate furnaces. Earn it from seasonal quests, first-time kills, dig sites, captures, passes, supply collection, and events.
Season 2 · Polar StormMaster the cold.
Master the cold.
Claim the north.
A visual, alliance-focused guide to heat, resources, Virus Resistance, connected territory, and the Rare Soil race.
Quick start
Your first priorities
Season 2 revolves around a simple chain: Coal supports production and heating, Titanium Alloy upgrades your furnace, and stronger heat plus Virus Resistance lets you move deeper into the map.
Build Titanium Alloy production
Upgrade your factories steadily. Each level adds the same hourly production, so improving the lowest-level factory first is usually the efficient approach.
Upgrade the High-heat Furnace
Your personal furnace raises temperature and Virus Resistance. Keep it advancing with your seasonal progression.
Stock and manage Coal
Coal is both a building resource and furnace fuel. Do not spend every reserve before blizzards or major relocations.
Support connected expansion
Join repairs, captures, rallies, defence, and Alliance Furnace contributions when leadership calls.
Season resources
Know what each resource does
Titanium Alloy
Used mainly to upgrade the High-heat Furnace. Produce it through Titanium Alloy Factories and receive additional amounts from goals and captures.
Rare Soil
The core alliance-ranking resource. Cities and dig sites produce it over time, making early and sustainable control extremely valuable.
Member habit: collect seasonal production frequently, complete first-kill rewards, and keep enough Coal available for urgent heating.
Temperature system
The centre gets colder
The closer you travel toward the centre, the lower the land temperature becomes. Positioning must account for personal furnace strength, Alliance Furnace range, Coal reserves, and temporary weather.
Before relocatingCheck the thermal map and destination temperature.
Before a blizzardStock Coal and confirm automatic furnace settings.
Inside the hiveKeep weaker furnaces closer to alliance heat coverage.
During overdriveWatch consumption; extra heat costs much more Coal.
Do not: teleport deep into cold territory because a marker looks convenient. Confirm heat coverage first.
Seasonal buildings
The production and heat network
Personal building
High-heat Furnace
Upgrade with Titanium Alloy to improve base heat, overdrive heat, and Virus Resistance. Use auto-activation settings thoughtfully for blizzards.
Alliance building
Alliance Furnace
Placed and controlled by R4/R5. Members help repair it and donate Coal. Its heat only applies within range, so hive formation matters.
Map objective
Cities and heat sources
Captured cities support expansion and seasonal production. Higher-level objectives demand stronger coordination, resistance, and heat preparation.
Territory strategy
Build a route, not a collection of dots
Connected expansion
The map alternates cities and dig sites, and corner connections count. Leadership should plan a coherent route toward valuable territory.
- Secure early Coal and Rare Soil production.
- Avoid isolated captures with no strategic follow-up.
- Protect the path behind the frontline.
- Match attack timing to heat and resistance readiness.
The Rare Soil race
Season ranking is based on accumulated Rare Soil, not simply the territory held at the end. Production time therefore matters.
- Capture productive holdings early.
- Reduce downtime when territory is lost.
- Track production alongside map position.
- Prepare the whole alliance for Rare Soil War.
Eight-week approach
A simple alliance roadmap
Establish
Build factories, repair the Alliance Furnace, stock Coal, raise Virus Resistance, and secure the first connected objectives.
Expand
Move into colder zones only when heat and combat readiness allow. Prioritise sustainable production and clean routes.
Contest
Coordinate siege windows, defence, mutual assistance, and Rare Soil War. Avoid personal attacks that disrupt the alliance plan.
Protect
Defend accumulated production, finish season objectives, manage rewards, and prepare for settlement activities.
Source and accuracy note
This page reorganises information from the credited Last War Tutorial Polar Storm guide for easier alliance use. Screenshots are displayed from that source website and remain the property of their respective owner(s). Game details can vary by server or update, so confirm event-specific values in game.