Kidnapped by the System and Sent to a Horror World as an NPC

Zhou Zhou used the beginner equipment gifted by the System, his sharp fingernails, to cling desperately to the ground so he wouldn't fall. His mission this time was to scare off the players who had come here to take a test. But could someone please tell him how he was supposed to climb out of this hole? There was nothing to brace his feet against below. He could only use his hands and fingernails to keep from falling, but that was all he could do. There was no way he could climb up! Come on! Put your back into it! Climb! Up! But to the players... "Th-there... over there... Ah!!!!" "Run! Something's crawling out over there!" "It's a ghost! It's a ghost!! Ahhh!!!!" Zhou Zhou watched them scramble away in terror and disappear around the corner ahead. He was a little speechless, and instinctively relaxed his grip. Then... Wait, wait, wait! I'm falling! System! System! Systeeem! Help me, quick!! "Congratulations on completing your first mission. You have gained 1 experience point and 1 point." Zhou Zhou fell back to the ground. Along the edge of the hole above him were several scratches made by his sharp fingernails, telling of his unwillingness and resentment. [Updates are starting!]