Apocalypse: I Use Alien Technology to Build a Shelter

【Transmigration】+【Zombie apocalypse】+【Multiple disasters】+【No female lead】+【Decisive and ruthless】+【Alien technology】 Transmigrated from the start, you’re abandoned by a search party in the freezing wilderness while gravely injured and weak. You struggle into the mountains and use an alien-tech ring to build the beginnings of a god-tier shelter. You planned to lie flat, but then you learn the truth about the apocalypse and the dangers that await in the future. You have no choice but to keep venturing out to gather supplies, improve yourself, and upgrade your base, until you unexpectedly become the whole world’s only hope. This is the story of someone who keeps a low profile and quietly builds strength early on, then joins forces with various factions in the middle and later stages to fight the ultimate villain and save the world.