I would love to see an Underwater DLC
Primary Details before reading
*Adds an array of water based enemies to the Commonwealth.
Backstory: A Scientist who's family researches the effects the war had on ocean life. Yearning to discover the truth about why there are irradiated fish(which shouldn't be a thing since no nukes were aimed at the ocean). After talking about a mysterious city of Atlantis you and the scientist head into a submarine and into the ocean to find the answers.
During the submarine ride you're attacked by irriated ocean life. You suit up in special Power Armor AQUA and kill the hostile marine life.
Upon reaching Atlantis you discover its a giant city inside a shattered glass dome. After exploring Atlantis you discover it was actually Vault 010 that was designed to survive in the saftey of Underwater. It's mission was actually to experiment the effects of FEV on marine life.
The backstory behind the Vault's destruction(left behind on water sustainable holodisks) entail about how the glass dome began wearing out and cracks and leaks began appearing around the dome of the city. The inhabitants knew their only chances of survival were to experiment on each other. They became fish people and cracked open the vaults dome. Freeing themselves.. and their strain of FEV as well as their freakish marine experiments on the world's ocean.
Ocean BestiaryMirelurks
Fangfish: Irradiated fish, come in various colors and species(such as angel fish/clown fish). Uses basic bites.
Mermaid: Descendents of Female Vault Dwellers, legs conjoined over time and their feet became a fin. Mermaids use a sonic scream and a claw attack.
Merman: Descendents of Male Vault Dwellers, while their legs didn't conjoin over time they developed more scaley skin. Their hands and feet developed fins. They use unarmed attacks as well as weaponry, such as rusted pipes as spears.
Bloatfish: Puffer Fish that evolved into terrifying spike covered creatures. Lunge at enemies as they puff up. When killed they blow up, releasing a cloud of spikes and guts.
Echoes: Dolphins that evolved from both FEV and radiation over time. They look largely the same as todays dolphins except they have glowing eyes and sharp teeth. They have a sonic attack similar to Mermaids.
Seastinger: Eels that evolved into hideous creatures. They emit electric damage passively to creatures around then. As well as sting enemies.
Deathjaw: Deathclaws of the deep. Sharks who were modified by the vaults FEV. Terrifying creatures feared by most sealife, including Merpeople themselves.
BossesQuest Related: Upon clearing out the Vault to discover facts about the ocean life, whilst reaching the Overseers giant office is the DLC's only mandatory boss.
Poseidon: A giant blue Merman. His high intellect grew into Hydrokinesis over the centuries. He can control the water, launching the Sole Survivor all over the ocean floor. Around his neck is the Key to the Overseers secret files.
Optional/Exploration Bosses
Omega Deathjaw: A high level Deathjaw, White in color. Most ferocious and menacing of all Deathjaws.
The One: A giant shamu, seemingly untouched by war and radiation. Inplied to have lived inside the vault but wasn't experimented on. High HP pool.
Princess Arial: A giant mermaid. Has fiery red hair. Her Sonic Scream has enhanced AoE. Vault files can conclude she was the previous overseer and was the one who created Merpeople.
Armor & ClothingPower Armor AQUA set: Power Armor used throughout the DLC
Scuba Suit: Worn by Dr. Stanely as she follows you in Atlantis.
Vault 010 Uniform: Picked up Around the Cities ruins.
Mermaid Skirt: Seashell Bra and "grass skirt" made of strands of scales from a mermaid's tail. (Obtained from Princess Arials corpse)
Dr. Stanely's Lab Coat: A white lab coat covering a white buttoned shirt and a black leather skirt. Black knee-high boots accompany the outfit.
CharactersDr. Kierra Stanely: A rather beautiful african-american woman. Grew up being raised to study ocean biology from her parents. Seeks to understand the wastelands ocean life.
Can be recruited as companion after finishing the DLC's main story.