Hidden Recipes for Mob Wars: La Cosa Nostra, Viking Clan, Pirate Clan and Zombie Slayer

This thread by @Christopher Warnack has served the community well for years, but it is incomplete. This list will contain all Hidden Recipes currently available in each game, along with the crafting materials, currency and level necessary.

Viking Clan
Highland's Longbow: North Midgard level 2: 1,000 coins
2x Serpent Clawblade
1x Chainmail Armor

Ebony Knife: South Midgard level 15; 10 million coins
1x Pillager's Tunic
1x Pillager's Axe

Njord's Champion: Aegir's Sea level 75: 80 million coins
1x Hurricane Master
1x Royal Hersir

Aegir's Trident: Aegir's Passage level 140: 175 million coins
2x Aegir's Warship
1x Hero's Warship
2x War Elephant

Skyshine Blade:Vanaheim level 300: 1 billion coins
1x Scroll of Vanir Knowledge (not consumed)
2x Minotaur Hoof Club
1x Thunderstoke Mace

Under Giant:Niflheim level 420: 750 million coins
2x Frost Giant
1x Viking Axes (not consumed)

Giantsbane: Jotunheim level 600: 3 billion coins
1x Rock Giant Hammer
1x Giant's Blade
1x Blessed Oil

Steel Sword: Alfheim level 620: 5 billion coins
1x Alfheim Dagger Set
1x Skull Dagger (not consumed)
1x Viking Dagger (not consumed)

Blood Spewer: Nidavellir Level 760: 10 billion coins
1x Cavern King (Craft Item)
1x Dwarven Berserker (I think it's a reward for the Nidavellir Challenge)

Hellfire Chariot: Muspell level 900: 15 billion coins
50x Fire Chariot
50x Fire Wingsuit

Poison Stroke: Helheim level 930: 20 billion coins
1x Hel's Blade
1x Hel's Tunic
1x Poison Arrows

Skymaiden: Vingolf level 1600: 20 billion coins
2x Goddess
1x Sacred Well

Aurora Spear: Asgard level 2000: 45 billion coins
1x Odin Favor Charm
1x Iwas Rune
1x Stonecrack Hammer

Autumn's Hammer: Midgard - Godly Trials level 2500: 100 billion coins (Thanks to monkhughes for providing the recipe.)
x1 Scroll of Vanir Knowledge
x1 Thor Amulet
x1 Valkyrie Bladestaff

Aurora Knight: Alfheim - Godly Trials level 2900: 275 billion coins
x1 Grove Knight
x1 Elven Captain
x1 Sacred Well

Stonepillar Axe: Nidavellir - Godly Trials level 3350: 600 billion coins
x1 Earthheart Hammer
x1 Battlerune Axe
x2 Viking Axes

Damned Elven Queen: Muspell - Godly Trials Level 3650: 500 billion coins (Thanks Jerome Griffin)
x1 Muspell Specter
x1 Golden Apple of Youth

Thunderswipe: Asgard - Godly Trials Level 5700: 1.2 Trillion coins
x1 Tyr's Warhammer
x1 Seax
x1 Block Hammer

Cyclone Furrow: Hel's Rising Level 6400: 1.2 Trillion coins
x1 Garms Collar
x1 Hammer and Chisel
x1 Spellbook

Spirit Stag: Skadi's Blizzard Level 6500: 1.5 trillion coins
x1 Snowcape
x1 Battle Swine

Ultimate Spear: Jotunheim World Wall level 7600: 2.5 trillion coins
x1 Mountainblade Axe
x1 Sigil of Odin

 

Pirate Clan
High Calibre Flintlock: East Tortuga level 1: 50 coins
1x Dagger
1x Treasure Map Portion

Pleasurecraft: West Tortuga level 15: 2,000 coins
1x Battle Brigantine (Challenge Drop)
1x Brigantine

Aztec High Priest: Tenochtitlan level 30: 2,00 coins
1x Aztec Warrior
1x Oceanic Pilot

Chinese Sea Dragon: Peking level 75: 75,000 coins
1x Imperial Patrol Ship
1x Dilapidated Wreck

Snap Flashes: Barbary level 115: 100,000 coins
x1 Silver Flintlock Pistol
x1 Deck Clearing Musketoon

Silverspike: Atlantis level 175: 500,000 coins
2x Atlantis Blade
2x Red Pearl Compass
1x Bottle of Grog (not consumed)

Minstrel Maiden: Port Royal level 300: 1 million coins
1x Treasure Chest
1x Jaguar Knight

Spanish Expedition Vessel: Cartagena Level 360: 6 million coins
1x Spanish Doubloon
1x Smuggler Ship

Rusted Hook: Davy Jones Locker level 510: 5 million coins
(even though you can get these items early, you can't craft this until you are level 510)
1x Cursed Hook
1x Silver Hook
1x Captain's Hook

Bahama's Bar Shot: Bahamas level 760: 9 million coins
2x Tentacle Whip
1x Spanish Shipping Schedule
1x Bottle of Grog

Silent Assassin: Japan level 880: 15 million coins
1x Samurai
1x Evil Eye Talisman
1x Wise Old Spirit

Prison Transport: New Orleans level 1300: 30 million coins
1x Water Taxi
1x Zombie Compass
1x Captain's Spy Glass

Old Tyme Sniper Rifle: Drifting Turtle Island level 1430: 30 million coins
1x Twin Blades
1x Coral Cutlass

Zeppelin: Bombay Level 1650: 100 million coins
1x Sea Wolf (Craft item)
1x Condor Feather (Gift)

Steam Cannon: Aurora Galcier Level 2050: 125 million coins
x1 Ice Rifle (Craft Item)
x1 Cannon (Gift)

Chain Rifle: Easter Island Level 2450: 200 million coins
1x Whirlknife (Craft Item)
1x Ancient Chest (Gift)

Bladeboot: Fiddlers Green Level 3160: 250 million coins
1x Master Sabre
1x Topaz Dagger

The Argo: Athens Level 3360: 300 million coins
1x Siren Ship
1x Love is a Battleship

Rage Spirit: The Lost World Level 3860: 350 million coins
1x Velociraptor
1x Archimedes Sunfire Mirror

The Automaton: Skyland Level 4660: 400 million coins
1x Baroness
1x Black Powder
1x Clockwork Parrot

Poison Syringe: Underworld Level 5210: 600 million coins
1x Razorflint
1x Turtle Soup

Master Explorer: Waterworld Level 5660: 1 billion coins
1x Hydro Engineer
1x Poppet

Skullnado: Afterworld level 5810: 1.4 billion coins
1x Razor Net
1x Dock o' Cards

 

Mob Wars: La Cosa Nostra

Razorblade Tophat - Level 55 - Location: London: $50,000
2x Incriminating Photos
1x Assault Rifle
1x Titanium Switchblade
thanks to Thrill

Cellular Gun - Level 90 - Location: Las Vegas: $150,000
1x Gold Brick
1x Diamond Knuckles
2x Lead Pipe

Snow Plow - Level 120 - Location: Moscow: $500,000
1x Yacht
1x S.W.A.T.Bearcat
1x Turret-Armed Humvee
thanks to WHELER

Flamethrower Lamp - Level 170 - Location: Dubai: $1 million
1x Sheik's Scimitar
1x Explosive Zippos

Dragon Cannon: Shanghai Level 210: $7 million
1x Shurikaboom (Craft Item)
1x Ninja Spike Chain (Craft Item)

Transformed Car Robot: Tokyo level 270: $15 million
1x Supersonic Train
1x Helicopter
1x RAH-66 Commanche

Tequila Flamethrower - Level 360 - Location: Tijuana: $30 million
1x Magnum El Diablo
1x Beretta Cheetah
1x Carcano Carbine

Magnetic Charges - Level 420 - Location: Medellin: $60 million
1x RPG-7
1x Information Kit

RG41 Rolling Thunder - Level 700 - Location: Johannesburg: $200 million
1x Safari Jeep
1x Harley Davidson
1x Ford Torino

Steel Harpoon Gun - Level 850 - Location: Bangkok: $750 million
10x Diamond Cleaver
10x Attack Chimp
10x Zastava CZ99

Rolex Garotte - Level 1000 - Location: Rio de Janeiro: $2 billion
1x Incendiary AK-47
1x Milkor M32 MGL
1x Porsche 911

Attack Gyrocopter - Level 1240 - Location: San Francisco: $6 billion
1x Hot Rod
1x Combat Yacht
1x Gold Jet
thanks to WHELER

Magblade: Sydney Level 1720: $16 billion (Credit to Gazember for posting the image)
1x Damascus Katana (Craft Item)
1x Scimitar

Spike Club: Havana Level 2120: $16 billion (Thanks to Gazember)
x1 Crisobal M2
x1 Boomerang
x1 Diamond

The Eiffel Laser: Paris Level 2520 $17 billion (Credit to WHELER)
x1 Assassin Baguette (Craft Item)
x1 Rolex
x1 Digital Recorder

Exploding Leprechaun: Dublin Level 3070: $17 billion
1x LPO 50 Flamethrower
1x Incinerator

Roadster Bike: Prague Level 3470: $18 billion
1x Jet Quad
1x RC Bomb Car

Pulse Blaster: Berlin level 4370: $20 billion
1x Panzerfaust
1x Shock Guantlets

Firebomb: Madrid level 4920: $22 billion
1x Gun Glove
1x Detonator
1x Firecrackers

 

Zombie Slayer

Kamikaze Cruiser: United States Level 11 $35,000
1x Rocket Camaro (Craft Item)
1x Moonshine Molotov (Hillbilly Boss Drop)
1x Vehicle Part

Firebuck Shardshot: United States Level 14 $20,000
1x Ithaca Stakeout (Purchased)
1x Moonshine Molotov (Hillbilly Boss Drop)
1x Weapon Part

Arctic Apocalypse: Canada Level 35 $40,000 (*Thanks to Alexander Lee for the recipe)
1x Canadian Special Forces Gear (Craft Item)
1x Chainsaw (Purchased)
1x Light Machine Gun (Purchased)
1x Gear Part

Northern Enforcer: Canada Level 37 $100,000
x1 Electric Skidoo (Craft Item)
x1 Parliament Gavel (Outbreak Drop)
x1 M26 Taser (Challenge Reward)
x1 Vehicle Part

Gaucho Wheels: Brazil Level 45 $200,000
x1 Gaucho Blade (Brazil Challenge Drop)
x1 El Camino (Brazil Challenge Drop)
x1 Vehicle Part

Automatic Grenade Launcher: Brazil Level 57 $75,000
x1 FN Minimi (Purchased)
x1 M79 Grenade Launcher (Purchased)
x1 Weapon Part

Halberd Shield: Spain Level 64 $500,000
x1 Halberd (Purchased)
x1 Beach Umbrella (Outbreak Drop)
x1 UN Helmet (Gift)
x1 Weapon Part

Boss Truck: Spain Level 78 $2 Million (Thanks to Alexander Lee for the recipe)
1x Military Pickup Truck (Purchased)
1x Metal Edged Fan (Flamenco Dancer Boss Drop)
1x Lance (Conquistador Boss Drop)
1x Vehicle Part

Guitar Gun: England Level 87 $2.5 Million
x1 Gretsch Guitar (Challenge Drop)
x1 Heckler & Koch MP5 (Purchased)
x1 Weapon Part

Royal Proximity Uniform: England Level 95 $1.5 Million
x1 Windsor Castle Uniform (Outbreak drop)
x1 Proximity Mine (Boss Drop)
x1 Gear Part

Chair Mounted Guns: France Level 105 $6 Million
x1 Automatic Handgun (Craft Item)
x1 Steel Chair (Boss Drop)
x1 Weapon Part

F1 - Destroyer: France Level 118 $7.5 Million
x1 Renault F1 Car (Purchased)
x2 LGI Mle F1 (Purchased)
x1 LLR 81mm Mortier (Purchased)
x1 Vehicle Part

Water Warrior: Italy Level 125 $10 Million *Thanks to Kelex for the hint
x1 Scuba Gear (Gift)
x1 Gondalier Uniform (Purchased)
x1 Gear Part

Tripod Rifle: Italy Level 175 $35 Million
x1 7.65 Calibre Rifle (Boss Drop)
x1 Sheet Music Stand (Boss Drop)
x1 UN Machine Gun (Gift)
x1 Weapon Part

Electric Splash: Switzerland Level 210 $50 Million (Thanks Kelex)
x1 Cree Sam Electric Car
x1 Rinspeed Splash
x1 Unicycle
x1 Vehicle Part

Smashin' Balls of Fire: Switzerland Level 240 $60 Million (Thanks to Kelex for providing the recipe.)
x1 Great Balls of Fire (Switzerland Craft Item)
x1 Tennis Racket (Tennis Star Boss Drop)
x1 Old School Racket
x1 Weapon Part

Sports Armor: Germany Level 290 $200 Million
x2 Handball Uniform (Outbreak Drop)
x1 Goalie Gear (Gift)
x1 Football Pads (Gift)
x2 Gear Part

Dual Threat Launcher: Germany Level 300 $300 Million (Thanks Martincles for the recipes.)
x1 Proton Rocket Launcher (workshop)
x1 EMP Ray (mad scientist)
x1 Steampunk Goggles (gift)
x1 Weapon Part

Space Soldier: Russia Level 340 $350 Million (Thanks Kelex.)
x1 Sokol KV2 Spacesuit
x1 Russian Roulette
x1 UN Uniform
x2 Weapon Part

Rammer: Russia Level 360 $350 Million (Thanks Kelex.)
x1 Lada C
x1 Russian Express Mouthguard
x1 UN Helmet
x2 Vehicle Part

MVP: China Level 420 $1.2 Billion (Thanks to Kelex for providing the recipe.)
x1 Team China Uniform (Great Wall Zombie boss drop)
x1 Flaming Doubledribble Staff (China Craft Item)
x2 Gear Part

Fiery Catapult: China Level 420 $1 Billion (*Thanks to Kelex for the recipes.)
1x Flaming Basketball (Boss Drop)
1x Fishing Pole
1x Rice Bowl (Boss Drop)
2x Weapon Part

Titan Thrasher: India Level 450 $2 Billion (*Thanks to Kelex for the recipes.)
1x Battle Elephant
2x Mahishasura's Sword
1x UN Machine Gun (Gift)
2x Vehicle Part

Performancetar: India Level 480 $2.2 Billion (*Thanks to Kelex for the recipes.)
1x Snipertar
1x Movie Reel
1x Z-Beats Headphones
2x Weapon Part

Stafftana: Japan Level 515 $4 Billion (Thanks Kelex.)
x1 Taiko Sticks
x1 Onyx Naginata
x1 Throwing Knives
x2 Weapon Part

Soran Competitor: Japan Level 525 $2 Billion (Thanks Kelex.)
x1 Soran Dance Costume
x1 Dragon Mawashi
x1 Wool Hat
x2 Gear Part

Bowie Dart: Australia Level 660 $6 Billion (Thanks Martincles for the recipes.)
x1 Bowie Knife (outlaw outback)
x1 Digeridoo (Australia mission)
x1 Throwing Knives (gift)
x3 Weapon Part

Cyber Cannon: Nigera Level 720 $8 Billion (Thanks Martincles for the recipes.)
x1 Cyber Suit (Dembe Boxer fight drop)
x1 Daewoo K2 (store item)
x1 UN Machine Gun (gift item)
x3 Weapon Parts

Battle Cat: South Africa Level 775 $10 Billion (Thanks Kelex.)
x1 Lion
x1 Blunderbuss
x1 Emerald
x3 Vehicle Part

Swordspinner Hat: Thailand Level 835 $8 Billion (Thanks Kelex.)
x1 Royal Guard
x1 Thai Sword
x1 Stabby Hat
x3 Gear Part

Hydrocannon Truck: Mexico Level 935 $11 Billion (Thanks Martincles for the recipes.)
x1 Firehose (Mexico mission)
x1 Oshkosh Sandcat (shop)
x1 UN Jeep (gift)
x3 Vehicle Part

Glass Cannon: Argentina Level 1065 $12 Billion (Thanks Martincles for the recipes.)
x1 Chandelier (Argentina mission)
x1 Thumper Launcher (shop)
x1 Aquamarine (gift)
x3 Weapon Part

Phoenix: New York City Level 1175 $13 Billion (Credit to Martincles)
x1 Napalm Bomb
x1 Pigeon
x1 Freedom Torch
x1 Vehicle Part

Septic Cannon: New Orleans Level 1245 $14 Billion (Credit to Martincles)
x1 Tee Shirt Cannon
x1 Septic Truck
x1 P22 Compact
x5 Weapon Part

Laser Battleaxe: San Francisco Level 1330 $15 Billion (Credit to Martincles)
x1 Laser Cutter
x1 Protest Sign
x1 Diamond
x5 Weapon Part

Coffee Hose: Seattle Level 1675 $16 billion
1x Barista Apron
1x Harpoon Cannon
1x Water Purifier
10x Weapon Part

Thunder Axe: Vancouver Level 1840 $100 million
1x Throwing Axes
1x Tazer Baton
1x Destructive Part

War Wolf: Anchorage Level 1915 $18 billion
1x Arctic Wolf
1x Arctic Armor
10x Weapon part

Rollers Royce: St. Petersberg Level 2185 $20 billion
1x Private Car
1x Kamaz 5320
10x Vehicle Part

Pizza Cutter: Paris level 2395 $30 billion
1x Rolling Pin
1x Glass Knife
1x Fan
10x Weapon Part