Aliens vs. Predator: Prey is a novel written by Steve and Stephani Perry. It was first published in 1994.
Machiko Noguchi accepted the assignment of supervising the ranching colony on Ryushi as a challenge. Little did she know that not only would she have to run the colony, she'd defend it with her life.
First the carcass of a spider=like alien is discovered. Then a rancher's family is massacred. Finally a creature unlike any ever seen before is brought to the colony medical center, near death. It soon becomes clear that not one but two strains of alien life have landed near the settlement of Prosperity Wells. One kind -- beetle black with shells hard as steel -- have been spawned as the prey in a deadly hunt. The other kind -- upright like humans but infinitely stronger and just as smart -- are the Predators. Between them are the human colonists, unarmed and vulnerable. With the entire colony at risk, Machiko Noguchi must choose between death and survival -- and may find her greatest ally in a Predator ready to kill her...