I can't believe this flew under my radar - never knew about this gem of a map. Really fun stuff!
I went and threw this into Copper, like an idiot, and ran out of ammo by the end, on Skill 2. It's properly balanced to rely on cells dropped by enforcers for the lightning gun (otherwise there are no cells pick-ups). Still made it (no deaths), although with just an axe.
Exciting stuff!