🧟 Doomsday Walkers & Corruptors

World Boss events like the Doomsday Walker and Corruptors are among the best sources of Mutant Crystals, Virus Resistance, and Hero XP. These events scale based on participation and rally power.

Understanding when and how to engage is crucial for maximizing rewards.

🧟‍♂️ Doomsday Walkers

Spawn weekly, typically around Fridays/Saturdays
Found on the world map — visible to all alliances
Require multiple rallies to take down
Drop loot based on individual damage contribution
Damage scales with Virus Resistance and squad quality

Tips:

Rally with full aircraft or best hero synergy
Use buffs and Virus Resist boosters
Time marches to hit back-to-back for speed clear
Contribute consistently to maximize loot tier

👁️ Corruptors

Appear less frequently than Doomsday Walkers
Typically part of event missions or red-marked alerts
Require coordination and pre-planned rallies
Offer Crystals, Hero XP, Virus Items

🎁 Reward Types

Reward	Source
💎 Mutant Crystals	Based on individual performance
🧬 Virus Resistance	Rare drop / milestone rewards
📘 Hero XP	From high-damage rally hits
🛒 Cure Points / Boxes	Occasionally tied to Cure event

🧠 Strategy by Player Type

🧑‍🌾 Free-to-Play (F2P)

Join all available rallies
Maximize Virus Resistance before event (4000–6000+)
Focus on 1 strong hero squad (Aircraft or Infantry preferred)

💳 Light Spenders

Lead smaller rallies if needed
Use tech/gear buffs to boost personal damage
Invest some Immune Protein for walker boosts

🐋 Whales

Run primary rallies, lead fast clears
Use premium hero builds + rally power buffs
Stack resistance and gear bonuses for top-tier drops

🔧 Preparation Checklist

🛡️ Max Virus Resistance before the boss spawns
🧥 Equip top gear on rally squad
🧠 Stack buffs before launching
🗺️ Scout spawn early and ping alliance