Ok, if the book has a HERF gun and it gets used it's worth 1/2 star. So, I give this 3-1/2 stars.
Good plot and I enjoyed the eclectic characters but the story lurched from chapter to chapter at times making the narrative uneven.
As some previous reviewers have stated this is more of mystery than cyber-punk. Not a lot of hard science or technology (see The Martian).