Apocalypse Cat

After the quake turns the world into a factional wasteland, gifted tinkerer Randy survives with his guarded partner Corva and his only constant, Squee, a black-and-white cat. When raiders steal Squee, Randy discovers an experimental strength serum that can make him unstoppable for minutes at a time. Every dose buys him power—and erases the intelligence he needs to find her before the wasteland, Corva’s ambitions, and his own new impulses consume him.