Apocalypse-Level Shelter

An outbreak of nuclear wastewater infection, followed by the arrival of a colossal meteorite: the world is about to enter an age of cataclysm! Only twenty days remain until the apocalypse! “Good thing I have the God-Tier Shelter System!” Ye Feng opened the System upgrade screen and immediately set himself a modest goal: fifty high-particle laser turrets! Huh? The nuclear wastewater infection has escalated out of control, and mutants have surrounded the city, which is about to fall? Fine, watch my high-particle laser cannons unleash their full firepower! One base can surround your entire mutant horde. Go on, tell me you’re not scared! What? The meteorite contains extraterrestrial life, and seventy percent of the world’s shelters have been breached? All right! Watch me upgrade and reinforce my shelter from top to bottom! Iron door → reinforced double-layer door → alloy gate → particle-beam laser corridor! I just love watching you try to bite me and fail. Hey, I’m just having fun!