"The recovery speed is extremely limited," Keira continued, her bright blue eyes reflecting the faint light. "If we could somehow get our hands on a zombie core from a level-two zombie, I firmly believe the energy restoration speed would be significantly faster!"
"Does that mean this level-two zombie core comes directly from the mutated ones that have already evolved?" Caleb asked, his curiosity thoroughly piqued by the concept of higher-tier monsters roaming the wasteland.
"Exactly," Keira nodded with a serious expression. "A level-one zombie core is completely blue, while a level-two zombie core takes on a deep purple hue. Beyond that, there are also level-three and level-four zombie creatures out there. However, a level-three zombie is already incredibly terrifying in terms of sheer s
