This is my tried and tested World War Z Hellraiser Class Build Guide + Tips for Insane
Build Key skills:
-Green Fingered - Plant Claymores 50% faster and 10% chance to plant at no cost
-Nimble Thumbs - Shotgun reload speed reduced by 50%
-Walk Softly - Start with S890 Shotgun
-Pickpocket - Killing 15 zombies in 5 seconds giver 25% chance to refill 1 equipment
-Free Refill 2 - Every equipment kill puts 1 round back into magazine instantly
-Scorched Earth - Claymore explosions set fire to area
How to proc Claymore Refill with rapid 15 kills:
-Use point blank claymores on zombies behind fences or stacked against things.
-Use Grenade Launcher on hordes to easily get rapid 15 kills.
-Use Stationary Machinegun to get very easy rapid 15 kills. Just fire directly into mass hordes.
-Fire Shotgun into pyramids/walls of zombies for easy proc
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