Mouse is used to look around.
"WASD" is for walking and strafing.
"F" opens the selection screen on objects and opens doors. It is the action button.
"Tab" opens the inventory.
Mouse scroll wheel is used to equip usable objects in inventory, e.g. flashlight.
"Shift" is used to sprint.
"Ctrl" is used to crouch.

This is mostly by TysonL, retrieved from this discussion. If you find this guide useful, consider leaving a comment thanking him.

Objective of the game: Find a Battery and Tools to fix your car. The Battery is in the first Warehouse, which requires Gasoline and Wires to fix the generator to get inside. Tools spawn around the map.



You start in your house, where you can choose items to bring. Energy drinks are the best, followed by a flashlight, then the tablet (which has a map on). Guns and ammo are too heavy and take a lot of room.
After your inventory is full, go to the car to go to the next section.

You then start in a dark forest. There is a crossroads in front of you. Start off going left to the big Warehouse where Gas or Wires will spawn. Next you want to go down the middle road to the Old Bar, where Tools or Gasoline spawn. Tools will spawn inside the bar, and Gasoline will spawn outside. You can then repair the generator at the Warehouse on the same road to get the Battery and go back to the car.

It is worth noting that you cannot carry the Battery and Tools to your car at the same time.

On the path on the right from the car, there is a Cabin, where tools can occasionally spawn, further down the right path is a 2 Floors House, where Tools only spawned once for me.
There is nothing useful in the Church.