https://www.youtube.com/watch?v=O7JQsXoCSsc
Zoltan C, modded to have 0 reactor bars and no battery (also Balance Mod).
I love "thematic" challenges like "no shields" or "no weapons", so this one really appealed to me. It was the hardest challenge run I've ever done, by far. It's brutal.
Until just before the Flagship, I thought it would be impossible without a pre-igniter. But with no other options, I made a new plan...