I'll be honest, my direction on this game wasn't great. I spent most of my time focusing on the tech
and that ended up making a very confusing game.
Your first goal is to find Nokala, which is very non-specific. You'll find her in the gas station which is shortly ahead of the car where you spawn.
You then have to return to the car, except you don't interact with that car, you interact with the keypad on the wall near the car (i know, sorry)
At that point, you find out the power has gone out! (Oh no! How inconvinient!) And you must reactivate the generators all by wondering the city, all while staying alive
and avoiding/shooting the zombies. You can press X to view which generators are left to be activated.
After activating them, you return to the car and activate the keypad, at which point you win!