Last War: Survival Seasons 1–4 & Age of Oil Progression Guide
Master Virus Resistance, Polar Blizzard Furnace management, SSR-to-UR hero promotions (Mason, Violet, Scarlett), and Exclusive Weapon waves.
🧬 Last War Seasonal Expansions (Seasons 1–4 & Age of Oil)
Complete guide to Seasonal Resistance mechanics, SSR-to-UR Hero Promotions (Mason, Violet, Scarlett), Exclusive Weapon waves, and Age of Oil HQ 31–35.
Season 1: The Crimson Plague
⚙️ Core Mechanic: Protein Farms & Virus Research Institute (Virus Resistance)
⚔️ Key Unlocks: Kimberly, DVA, Tesla
Build Virus Resistance via Protein Farms and Mutant Crystals to capture higher-tier infected strongholds, promote Mason to UR, and battle across neighbor Warzone maps.
Season 2: Polar World
⚙️ Core Mechanic: Titanium Alloy Factory & High-Heat Furnace (-60°C Blizzard Survival)
⚔️ Key Unlocks: Murphy, Carlie, Swift
Manage base temperature during blizzards, upgrade your High-Heat Furnace with Coal/Titanium, promote Violet to UR, and unlock the Age of Oil tech tree afterward.
Post-Season 2: Age of Oil (HQ 31–35)
⚙️ Core Mechanic: Oil Wells, Age of Oil Tech Tree & +1 Build/Tech Queue
⚔️ Key Unlocks: HQ 31–35, Hero Lv.155–175
Research the Age of Oil tree (requires 40% completion to unlock Oil Wells and the HQ 31–35 Prerequisite node) before spending Iron/Gold on HQ 31.
Season 3: Golden Realm
⚙️ Core Mechanic: Curse Resistance & Desert Oasis Sanctuaries
⚔️ Key Unlocks: Marshall, Williams, Schuyler
Cleanse desert miasma, convert green tiles around Alliance Centers, promote Scarlett to UR, and push T10 Special Forces + Exclusive Weapon Lv.20+ milestones.
Season 4: Evernight Isle
⚙️ Core Mechanic: Optoelectronic Lab, Quartz & Blood Moon Nightfall
⚔️ Key Unlocks: Stetmann, Lucius, Adam
Maintain Lighthouse illumination during Blood Moon eclipses, upgrade Optoelectronic nodes, and unlock Stetmann and Lucius Exclusive Weapons.