20,000 Leagues Under the Ground

20,000 Leagues Under the Ground is a feat challenge in the Three-Headed Serpent mission in Santa Fortuna.

To acquire this challenge, Agent 47 must infiltrate the Delgado cartel's submarine cave while disguised as the head engineer for the submarine.

Objectives[]

Enter the submarine cave as the Submarine Engineer.

Rewards[]

+2000 XP.

Trivia[]

The challenge's name is a reference to the novel 20,000 Leagues Under the Sea.

Three-Headed Serpent Challenges
Assassinations	A Bite Out of Crime - A Strong Foundation - Authentic Local Cuisine - Bait and Switch - Blowing Bubbles - Caution: Heavy Machinery - Deadlier Art - Exit, Stage Left - Hard Hat Area - Hold My Hair - It Looks Just like Her - Mind the Step - Off the Wagon - Piano Man - Someone Could Hurt Themselves - Special Delivery - Splash Landing - Still as a Statue - Straight Shot - Tasteless, Traceless - The Hallowed Ground - The Healing - The Secret Ingredient - Versatile Assassin - We Meat Again
Discoveries	Chameleon - Discover Santa Fortuna - Low Mileage - Plain Sailing - Pop a Wheelie - The Wind in Your Hair
Feats	20,000 Leagues Under the Ground - A Brief History of Rico Delgado - Brick and Mortar - Cog in the Machine - Cupid - Don't Shoot the Messenger - Drown Your Sorrows - Feedin' Time - Feel Good Hit of the Stunner - Fly Tipping - Got Any ID? - How Ribbiting - It Looks Nothing like Her - Key Master - Mission Story - Backpacker - Mission Story - Deadly Art - Mission Story - Half Baked - Mission Story - Hallowed Grounds - Mission Story - Heart of Stone - Mission Story - Submerged - Mission Story - Undying Love - Nature Finds a Way - On a Pedestal - Salt the Earth - Secret Tunnel - Who Ya Gonna Call?
Targets	The Boss - The Cook - The Face
The Classics	Silent Assassin - Silent Assassin, Suit Only - Sniper Assassin - Suit Only - The Classics
Codename 47	Codename 47 - Say Hello to my Little Friend
Cut Challenges	I'm With The Band - Impromptu Jam Session - Mission Stories - Santa Fortuna - More Bass In The Monitors - No Evidence - Shaman Shenanigans - Strung Out - The After-Party - The Altar Ritual - The Divination - The Hero of Santa Fortuna - The New Concoction - Three Course Dinner