Killing Monsters Permanently Increases Power Speed, Which Family Can Withstand It?

Meng Shiyan died, then closed his eyes and opened them again to find that he was reborn. Reborn in an era where everyone changes jobs. This era is invaded by another world and the rules of the world are subverted. The living space of human beings is squeezed, wild monsters are rampant, and secret realms emerge. Only job changers can have more room for survival in this era. However, Meng Shiyan's C-level talented gunnery master, who had been transferred to a garbage job, was bound to an SSS-level unlimited firepower system. As long as you kill monsters, you can permanently gain skill amplification, and your attack speed, power, and range will increase linearly. It's simply unreasonably strong! A month later, Meng Shiyan found that he had achieved 10,000 rounds per second, with a range of dozens of kilometers. Where is the power of a pistol bullet? This is simply cruise missile level! A year later, Meng Shiyan was already lying at home, bullets flying in the sky, easily suppressing the beast tide thousands of miles away. Since then, humans have stood up and taken back their invaded land.