The Apocalypse Is Coming, I Will Take My Pets to Build Infrastructure

(The end of the world + system + pets + infrastructure) When I open my eyes and arrive at the end of the world, things are calm on the surface, but I am a person with hundreds of millions of supplies in hand. I was so panicked inside, what? Why do you have to go out and fight monsters to upgrade the system to unlock supplies? One person and one cat bring their friends to fight monsters, level up, accumulate crystal cores, and finally build their own paradise.