New Items and Buildings
New Items
Mutant Crystals – RUSH PRIORITY
Get by:
- First Zombie Kills
- DW First Blood
- Season Quests & Goals
- Genetic Recombination
- Hero Return Ticket
- Weekly & Season Passes
Used for:
- Constructing and upgrading Protein Farms and New Vehicle Buildings
Immune Protein – RUSH PRIORITY
Get by:
- First Zombie Kills
- Protein Farms
- Season Goals
- Hero Return Ticket
Used for:
- Constructing and upgrading Virus Research Institute and New Vehicle Buildings
Gene Fragment
Get by:
- Types I–III: Radar Tasks, Kill Zombies, Kill Doom Elites
- Types IV–VI: Curing Allies
- All Types: Attacking Cities
Note
- Recombine to obtain Mutant Crystals and rewards (fragments can be traded like maps)
Hero Return Ticket
Get by:
- First Kill Rewards
Used for:
- Same Season 1 Hero Recruiting Pool – Includes Schuyler and Williams at higher percentage
- Requires Mutant Crystals and Immune Proteins
Note
- Counts for points in Arms Race and Day 4 VS Duel
New Buildings
Virus Research Institute – RUSH PRIORITY
Get by:
- Using Immune Protein
- Upgrade to Level 30 regardless of HQ level
Used for:
- Increasing Virus Resistance Levels
Protein Farm – RUSH PRIORITY
Get by:
- Using Mutant Crystals
- Upgrade to Level 30 regardless of HQ level
Used for:
- Creating Immune Protein
Note
- 4 free Farms + 1 from Weekly Pass
- Level 1 → 5 to unlock Farm 2
- Level 2 → 10 to unlock Farm 3
- Level 3 → 10 to unlock Farm 4
- Weekly Pass Farm is available immediately
- Output is evenly increased regardless of level
- Higher-level farms = higher hourly output
Emergency Center
Get by:
- Buildable in Season 1 (requires HQ level 22)
Used for:
- Rescuing a percentage of troops that would otherwise die
Note
- Long cooldown between uses
- Upgrading increases rescue capacity
- Also increases rescue percentage and reduces cooldown
Temporary Farms
Get by:
- Randomly appear after Zombie Kills
Used for:
- Farming Food, Iron, Gold, Diamonds, and Mutant Crystals
Note
- Functions like a dig – send squads to gather