The End of the World: I Am Invincible as I Am Proficient in All Professions

The end of the world has come, zombies are rampant, and social order has collapsed. Ji Ran can earn points by killing hostile creatures, which can be exchanged for supplies and weapons in the system mall, and he can learn various professional skills. Occupational classification: swordsman, swordsman, pistol shooting instructor, welder, car mechanic, locksmith, car thief, sewer unclogger... The first few professions are normal, but why are the latter professions becoming more and more outrageous? Etc? Am I dazzled? What is this? Ji Ran quickly clicked on the last profession...