Prehistoric: Starting Awakening Upgrade System

Su Chen traveled to prehistoric times and became an immortal soldier. Fortunately, there is an awakening and enemy-killing upgrade system. As long as you kill enemies, you will gain experience points, and you will also receive generous rewards for completing system tasks. [The host leapfrogged the level and killed Daluo Jinxian, and obtained the innate treasure. [The host leapfrogged the level and killed the quasi-sage, and obtained the Chaos Treasure. [The host kills the saint and obtains the great treasure of the avenue. The higher the level of the enemies killed, the richer the rewards. Su Chen relied on the enemy-killing upgrade system to race all the way through the ancient world, meeting gods and killing gods, meeting immortals and slaying immortals, and step by step becoming the supreme killing god in the ancient world...