MTL - I Have a Big Problem with My Achievement System - Chapter 409 My demon is your demon!

Marcus Manfred dreamed of joining the United States Army. That dream ended the day an accident took his life.But he woke up and met a Goddess who told him that he can be reincarnated with a weapon system. He accepted it and was reincarnated in another world.The Military Weapon System, grants him access to modern weapons and equipment. Rifles. Tanks. Fighter jets. Even warships. But everything has a price.To grow stronger, Marcus must take on requests from towns, nobles, and kingdoms: clear monster nests, hunt demons, repel invasions. Each completed quest earns him funds to expand his arsenal.But this world is not Earth.Magic bends the rules. Dragons rule the skies. Demon armies march in the dark. And medieval kingdoms do not take kindly to a man building a private army beyond their control.In a world of swords and magics, can Marcus survive using his modern weapon cheats? Or will magic crush modern firepower?

“You died.”That was what the mysterious figure told him, but then he was given a second chance for the good deeds that he did in his previous life.“Super Prodigal System!”“Cultivate to immortality by wasting as much money as you can!”For the former number one prodigal of Earth, this was the perfect system!

As monstrous invaders ravage the world, Ryzen Kael— a man shattered by a tragedy ten years ago— faces his final moments. But just as death closes in, a mysterious system awakens within him, offering a path beyond his limits.Now, with nothing left to lose, he steps into a dangerous journey of survival and power, defying fate and unlocking abilities beyond imagination. Follow his rise as he challenges destiny itself, carving his name into history!Author's other storiesThe Unrivaled Holder: Rise of the Dragon Monarch - 3rd Season Ongoing

A decision can destroy the sun, moon and stars. A finger can kill the Heavenly Overlord. While chatting, the Heaven and ten worlds can be annihilated.