1_bit ghost shooter

You are in a strange place

You have a gun and there are a group of ghosts and monsters around you

Collect ammo

Find the key and get out of this place

Fortunately, you will find someone waiting for you in his car in front of the exit door so you can escape from this place

 (the game is incomplete and has some problems, in addition to the key will be in front of you :)  )