Start Leveling up from a Skeleton Monster

What should we do with the undead skeletons that people are shouting about after traveling through time? Very urgent, waiting online! Reborn in a different world, Luther, who was covered in white bones, unexpectedly got an upgrade panel. He could become stronger just by killing monsters. From [Skeleton Monster lv1→Skeleton Swordsman lv10→Skeleton Giant Swordsman...] From [Skeleton Monster lv1→Skeleton Archer lv10→Skeleton Scout...] From [Skeleton monster lv1 → Skeleton Warlock lv10 (special way) → Pain Warlock...] … Although many evolutionary paths made Luther excited, in order to "carry on the family line", Luther finally had no choice but to grit his teeth and choose the "Blood Thirsty" path, which was the only way that allowed him to evolve into flesh and blood.