I'm not sure if parts of this book are unusable because of sheer neglect from the author of if the author honestly couldn't tell the difference between magic and technology.
The entire section on cybernetics is unusable since power requirements for the cybernetics are never covered (unless cybernetics are powered by never ending magic). Suggesting that individuals with quasi renaissance era knowledge and equipment are capable of building ultra tech equipment and performing mind enhancing brain surgeries seriously challenges suspension of disbelief.
About the best weapon in this book is the chainsaw dealing 3d6, criting with 18-20/x2 and capable of running for 10 hours between charging. Most of the energy guns deal laughably low damage for an ultra tech weapon, such as the laser rifle that deals 2d6 on a ranged touch attack. Of course all guns ignore armor no that isn't anything special.
The arc weapons are clearly unbalanced. Arc weapons use lightning to make attacks and gain a bonus to hit targets wearing metal armor, but the armor, which conducts the electricity safely around the target, provides no damage reduction. In reality chain mail is the best possible armor to protect against high power shocks because the electricity is conducted around, not though, the person wearing it. Facts about electrical conductivity have only been remembered when it favors the person using the weapon.
There is no explanation or logic why the scatterlight suits give an armor class bonus against touch attacks such as ghosts, Ray of Enfeeblement, Shocking Grasp, or any other non light based attacks.
Pharmaceuticals are unbelievable, like hemochem which takes affect on the round it is used and grants a subject, living or undead, fast healing for 5 rounds as it promotes the body's natural healing. Working to promote natural healing on undead and forcing the human body to produce a day's worth of blood cells in half a minute are both nonsense for any technology (not a problem for magic though).
Some spells are unusably vague, such as Antitech Field, which blocks and repels ALL technology without specification. Because it never specifies what it affects one is left to assume that it repels anything manufactured such as energy weapons, pharmaceuticals, cross bows, clothing, doors, etc.
If you are willing to fill in a lot of blanks and assume that all the technology in this book is magic rather than science then this book has potential, earning it two stars from me.