Megamachia is a Super Doctor Genius Scientist!

Zombies everywhere, a deadly apocalypse, the world reduced to a desolate wasteland. One woman stands and laughs and sometimes trips over on purpose in the face of it all! Her name is Megamachia. The Great Doctor Scientist Megamachia! So, what does the most brilliant of minds do when she finds a book in a shabby old shack telling her to cut herself open and draw a magic circle on the ground in order to summon a demon? Why, she does exactly that! She cut the shit out of her left arm, gleefully drew the magic circle with her own dripping blood, and chanted the nonsensical incantations valiantly and confidently. As expected of Megamachia, it actually worked, but not in the way the book described it. An unexpected situation, several big revelations, maddening prophecies. A lesser mind would've spontaneously combusted from all the chaos, probably. But there is no need to worry, for surely even this is fully within Megamachia's predictions. Truly, a fucking genius. Now finding herself in a whole new world, with a few new toys by her side, what grandmaster level moves will the Great Genius Megamachia show us?