Wasteland Rose: My Salted Fish System Can Be Upgraded

I am bound to a salted fish system, and the task is to make me lie down in the end of the world. "Please host sleep immediately." - When the mutant giant spider pounced. "Please host, stop running." - When the tide of corpses comes. "Host, please keep smiling." - When the base boss put a gun to my forehead. I became the most famous trash snack in the entire base. Until that day, the system suddenly upgraded: "Congratulations to the host, you have achieved the 'Ultimate Salted Fish' achievement!" "Acquire passive skill: The attacker will fall asleep where he is." "Acquire the hidden gift: a smile can make all things surrender." When mankind was in a frenzy for survival, I became the savior by lying flat. The boss knelt down on one knee and offered his authority: "Please, I will give you another five hundred years."