You fail

You keep shooting the damned things. But there are just too many of them. At one point, they simply overwhelm you, getting you to the ground, your bodies stabbed numerous times with their blade like legs before they would suddenly run off to the distance. As for what made them retreat, you do not know. But as you are just about to close your eyes, your mind fading into blackness, you recognize a guy, dressed in military gear, towering above you. And he has a syringe.

"Don't worry, this will fix you up in no time," the man says, and he injects you with the serum. You losing consciousness sometime after the needle is slipped out of your neck.

In the end, the man takes you to his cabin, located in the middle of the desert. Your minds altered by the nanites, you become his slaves, entertaining him between his frequent prowls to gather what you need for survival. As the years go by, you couldn't say that you are unhappy. You just wish there were more guys like him whom you could entertain.

BAD END: RESCUED BY A LOCAL