Waldo rummaged through the corpses on the ground, and from the backpacks of a few people, he found quite a few treasures. First, he found two super Source stones in the backpack of the tough guy Perry.

He also discovered two super Source stones from the Thunder Brothers. And at the beginning, he found two more super Source stones from the first-level challengers he killed. This meant that Waldo now possessed an astonishing number of super Source stones - eleven in total!

Eleven super Source stones! If Waldo wished, he could immediately create two second-level challengers with strength not much inferior to his own. With this, Waldo could sweep across the entire land of darkness.

However, Waldo had no such plans. The most important thing for him now was to enhance his own strength. The eleven super Source stones could directly promote him to a third-level challenger.

After pondering for a while, Waldo packed various materials into his backpack. Without lingering, he shot off in a direction and quickly disappeared from the spot. Waldo didn’t immediately return to his safe house, but instead found a secluded, uninhabited place - a cliff.

The mountain peaks in front of him were rugged with thin rocks, and the entire mountain was bare. Due to the lack of sunlight, the original vegetation had long since withered. Vaguely, one could see many dry trees on the mountain top, stretching out branches like ghastly claws, sinister and horrifying, exuding a strange aura.

Sharp energy burst forth from Waldo’s fingertips. Like a sharp sword, it easily cut through the rock. Soon, Waldo carved out a cave on the cliff, five meters deep, two meters wide, and three meters high.

"This is the place to use these super Source stones!" Waldo thought as he entered the cave. With a light press of his finger on the ground, the energy surged tumultuously, enveloping a huge rock outside the cave.

Boom! The entrance to the cave was blocked. "Now, I can use the super Source stones in peace. It shouldn’t take too much time," Waldo thought to himself. The reason he didn’t return to the safe house and chose a random place was due to multiple considerations.

Returning to the safe house carried certain risks. It wasn’t too difficult for others to find this information. Moreover, the number of super Source stones Waldo had was simply too great.

Although his formidable strength could deter some petty criminals, he feared the lure of wealth might inspire reckless actions. If someone dared to break into the safe house and disrupt his leveling up, it would be dangerous.

Therefore, Waldo chose this secluded place as it was safer. The land of darkness was vast, who would know he was here? As he pondered, Waldo flipped his palm, and eleven dazzling super Source stones appeared, neatly arranged in the cave.

A captivating, noble purple light filled the cave, turning it into a fairy-tale world. The charming energy emanating from them was heart-stirring. The super Source stones were like flawless crystals, smooth and pure.

"Come! Use the super Source stones!" With a thought, the system transformed the super Source stones into a mysterious power. However, to Waldo’s surprise, he did not directly advance to a third-level challenger. He then saw a flood of messages from the system, all about the challenger’s upgrade process.

Challengers were distinct from survivors. Challengers were the top geniuses of various trial realms. At their level, their bodies had already evolved to a very high level. According to the system’s explanation, the Eternal Kingdom divided challengers into nine levels. The difference between a first and second-level challenger was mainly in the amount of energy and actual combat strength.

From the third level onwards, it was significantly different. After reaching the third level, challengers needed to use super Source stones to condense an immortal body. At the ninth level, they could regenerate from a single drop of blood, and even achieve immortality, unless the supreme rulers intervened.

Therefore, each step forward after the second level was a qualitative leap. Additionally, even among third-level challengers, the strength disparity could be huge. At this stage, the most important criterion for judging a challenger’s strength was how well they had condensed their immortal body.

From the third to the fifth level, challengers transform into immortal bodies. At the third level, the transformation involves the body’s torso. At the fourth level, it’s the internal organs that are transformed. By the fifth level, the most crucial part, the head, is transformed into an undying body.

However, not all challengers can achieve a hundred percent perfect transformation. Those who have managed a perfect transformation are extremely rare, even throughout the countless years of the supreme rulers’ reign over the Eternal Kingdom.

For the vast majority, achieving a fifty percent transformation is already quite impressive. However, the higher the degree of transformation, the stronger the power and the greater the potential! Waldo thought to himself.

Previously, he had limited understanding of challengers. Now, with this new information, a whole new door slowly opened before him. The concept of regenerating from a drop of blood was astonishing to him.

Amidst his surprise, he couldn’t help but glance at his mysterious shop. He had accumulated quite a few survival points these days. Unfortunately, the shop wasn’t open. He couldn’t exchange his points for anything and wondered when the shop would open again. The thought of regenerating from a single drop of blood, a method of legend, was incredibly exhilarating!

Waldo didn’t dwell on it much longer. He organized his thoughts and continued to sift through the massive influx of information. The fifth level marks the final stage for challengers in condensing their immortal bodies.

At this stage, the completion degree of the transformation into an immortal body significantly determines the ability to reach the sixth level. This is because, for challengers between the sixth and eighth levels, the main focus is on consolidating their own domain. The strength and size of the domain are determined by the degree of transformation of the immortal body. It’s quite complex.

Waldo only skimmed through this information without delving into the details.

"This means that although I now have eleven super Source stones and can advance to a third-level challenger at any time, using ten super Source stones to ascend to the third level is just the minimum threshold. According to the system’s explanation, the more super Source stones one has, the greater the benefits of advancing to the third level, and the higher the degree of transformation into an immortal body!"

Ten super Source stones can only transform thirty percent of the immortal body. Even if it’s possible to compensate later, it won’t exceed fifty percent at most. To achieve a high transformation rate, or even a perfect transformation of the immortal body, one must prepare sufficient super Source stones when advancing to the third level.

Waldo is a very ambitious person and naturally seeks perfection. After all, this not only relates to future strength but also determines the upper limit. Perhaps, this is also one of the supreme rulers’ tests.