The Simple Life of Killing Demons - Chapter 13Book 3:

With the Legendary Mechanic System, I transmigrated to Marvel Universe to be Dr. Zola’s assistant.

With Mechanical Force Analysis, I can learn every black technology.

Winter Soldier’s arm? I built a better one for you.

Iron Man’s armor? I already made it a decade earlier.

Doc Ock’s tentacles? I am the one who provided core technology.

Hulk’s mutation? Sorry, I was there and got hit by the radiation too.

As for a certain purple potato, can he collect all Infinity Stones?

……

However, I only had one simple ultimate dream. That is to go home…

- Description from Novelupdates

After his village was destroyed by an E-Ranked demon horde, Augustus was titled the failed lord and mocked by other noble lords.Until, he died.Augustus regressed with the knowledge of the future and his SSS-Ranked skill “Talent Evolution,” fighting to change the D-Ranked village of Iona into an S-Ranked Empire.Need resources? His villager's 10x Resource Multiplier Talent was evolved into 100x! Enemies coming? His champion's Two-Hit Critical Attack was evolved into a One-Hit Critical Attack! Gods? He reared a couple in his courtyard.While other lords slept on their villagers’ talents, Augustus’s villagers transcended gods. While they mocked him for picking a dead village, he would transform it into an oasis.

A long life, starting from Jin Yiwei.

Completed this million-word boutique: Longevity begins with all true. Quality Assurance!

- Description from novelbuddy

Lieutenant Jack Fritz is a self centered American man of German descent. He like many joined the United States Navy in hopes of getting an easy life and easy money. In fact getting money and taking it easy is all he has ever really wished for in life.However life seems to have other plans in-store for Jack as he suddenly finds himself at the beginning of World War 3. Though his fight does not last for long as he is suddenly blown to bits by a missile and sent into the afterlife, but instead of going to heaven Jack is dragged to another place where he is given another chance at life by some fiery demon for a price.Having been given no other chance Jack does as the demon says and earns himself life again. Though he doesn't return to his original world, but a medieval one. With no guidance and no higher purpose given to him he simply decides to do the best that he can within this new world of his. This time he will for sure earn that perfect life of his and possibly a lot more.But little does Jack know his fate is not his own and there are many sinister things in-store for him. Also the world he finds himself in is not a safe or simple medieval world, but one beset by dangers from all sides that are already little by little driving humanity towards its extinction.