I Have an Adventurer's Guide

[D&D-style + Adventurers + Warrior + Fantasy] A soul from Earth unexpectedly transmigrates into a world of swords and sorcery. The good news: He possesses a cheat—a mysterious book called The Adventurer's Guide. By completing tasks， he can gain experience， level up， and acquire feats and attribute improvements. The bad news: He arrives right in the middle of a cult's sacrificial ritual， and the offering happens to be himself. There are no grand， sweeping adventures or heroic destinies. Renato's new life in this other world gets off to a rough start. His immediate priority upon crossing over is to escape from a band of self-proclaimed Harpers who are， in reality， murderous fanatics. This is the story of a man beginning his isekai life from absolute zero. What lies at the end of the guide remains unknown—is it paradise， or the abyss?