Season 2 Specific Buildings

High-heat Furnace

CRITICAL: Provides essential Heat to counteract cold debuffs and Virus Resistance (VR) needed for S2 enemies/captures. Upgraded with Titanium Alloy, consumes Coal. Higher levels increase base heat, max heat (Overdrive), and VR.

Top Priority
Titanium Alloy Factory

Produces Titanium Alloy, the resource needed to upgrade the High-heat Furnace. Requires Coal to operate and upgrade. Unlock and level up multiple factories.

Essential
Alliance Furnace

Provides Heat & VR buff in an area for alliance members. Requires Coal donations to level up and maintain heat. Can be relocated strategically. Higher levels increase range and buffs.

Alliance Focus

Core Building Priorities (Post S1)

Headquarters (HQ)
Level Cap Gate

Still the most important building. Gates hero/building level caps. S2 may allow levels up to 35 via 'Age of Oil' research.

Tech Center
Research Hub

Crucial for progress. Prioritize S2-relevant tech: Building Cost Reduction (Self: Master Craftsman, Alliance: Veteran Craftsmen), potentially VR or Furnace efficiency techs. Profession skills (Engineer Lv 35) also help.

Tank/Air/Missile Centers
Unit Power

Upgrade based on primary troop type (Tank recommended early). Key source of power.

Hospitals
Troop Recovery

Essential for troop recovery, especially during war/buster. Level extra hospitals for increased capacity.

Other Core Buildings

Don't neglect Material Workshop (screws for gear), Resource Buildings (Food, Oil, Steel, Minerals), Alliance Center (helps), Wall (defense), etc.