This Max-Level Adventurer Is Far Too Cautious

[Just defeated the Demon King and cleared a dungeon, this is not a joke] Arthur was summoned to a world full of monsters and dungeons, where he received an overpowered Adventurer System. Killing monsters earned him loot, and he had access to all kinds of support panels that no one else could see... But unlike the 99 transmigrators before him, who confidently charged into dungeons with their Systems, took on monsters far above their level, and died horribly, Arthur was extremely cautious. System: “Can you stop farming slimes in the newbie village? Forget the ultimate goal of defeating the Demon King, saving the world, and going home for a second. Couldn’t we at least go into a dungeon and fight some goblins or minotaurs? You’ve already reached max level!” Arthur: “No. First I need to farm three revival coins: one to save my life, one as a backup, and one as a backup for when I use up the backup.”