The Final Station

To be able to get this achievement you will have to travel with Harry Green as passenger with you in the car till near the end of the game at chapter 12.

Harry is located at chapter 1 , here your starting point of the lvl :

And here is where he is a few floors up :

Have him with you and do not take any other survivor with you till you get to chapter 12 where your car crashes and you pop the achievement.After you get your achievement you can exit to main menu and start a new play for the rest survivors .

Update: cut playthough time in half
DLC Cheese hope you like cheese,

If you follow my Cliff's-Notes you will skip a large majority of the fights saving ammo and medic's. pick up only what is on your path as it will be enough to finish the game and buy what you need.
Use ladders to your advantage to kill enemies easy and without wasting ammo .

-Green slime guys one on one - I just take 1 hit of damage and wack away.
-small speedy guys you can power swing or shoot them.
-Normal guys wack away
-glowing red guy - you will only fight 1 with this guide, keep distance and wack away

Each item / passenger should be in order as you encounter them as you follow

Chapter 1 - Harry's Story
Water - starting room in cabinet
Food - 3rd floor Fridge
Passenger -3rd floor room next to fridge with food
Gas - next to Car

Chapter 2
Gas - Left From Car Basement 2nd house follow path to sewer tunnel
Water - Right from car - first sewer
Passenger - Right from car - Sewer / Basement of 1st house "movie theater"
(back track return to car)
Food - Right from car - Inside first house above sewer
(back track to car)

Chapter 3
Food - Right from car - Up First ladder 2nd room
(back track return to car)
Passenger - Left from car- First building across bridge - up ladder
Water - Left from car- First building across bridge top left room take ladder down
gas - left from car- far left basement
(Continue on path to leave)

Chapter 4
Water - Left of car - Left side of building top of ladder
(back track return to car)
Food - Right from car - First ladder
Passenger - Right 3rd Building left side upper level
Gas - Right from car - 3rd house basement
(back track to car)

Chapter 5
Food - Left from car - 2nd building
(back track return to car)
Passenger - Right from car- First house (cant miss him)
Gas - Right from car- basement First house
Water - Right from car - Use ladder to the 2nd floor follow the path to the end
(back track return to car)

Chapter 6
Water - Right from car 2nd "house" 2nd ladder - door on left
(back track return to car)
Gas - Left from car take road passage - First house basement
Passenger - Left take road passage - 2nd house
Food - Left from car take road passage - 3rd house
(back track to car)

Chapter 7
Passenger Left from car - First house 3rd floor (not church)
Water - Left from car - 2nd House 2nd floor
Food - Left from car take boat - First house
Gass - Left from car take boat - 2nd house 2nd room (go up lader and around)
(backtrack and leave)

Chapter 8
Water - Right from car only 1 way to go
Food - Left from car stay above ground use ladder in sawmill
Passenger - Left from car use ladder in sawmill
Gas - Left from car - Basement Far left
(backtrack and leave)

Chapter 9
Gass - 1st Sewer - just to the left of the car
Passenger - Left from car 2nd house (dont use sewer)
Water - Right from car - Stay above ground in "factory" on top of ladder
Food - Right from car use factory Elevator - Follow the only path
(Follow the only path back to car)

Chapter 10
Gas - Left take Road passage - First sewer
Passenger - Left take Road passage - First sewer - 2nd floor ladder on left
Water - Left take Road passage - 3rd floor above passenger far left main floor
(back track return to car)
Food - Left from car - stay on main floor going left - go down 5 sets of ladders - go left - First building climb to the top
(backtrack and leave)

Chapter 11
Food - Left from car - 4th house - 3rd floor (BAR)
Passenger - Left from car - Last house at the end
(back track return to car)
Water - Right from car follow only path - First house past church 3rd floor
Gas - Right from car - Last house sewer follow the path
(keep going same direction back to car)

Chaper 12 Achievements pop
Not sure is there is a "passenger" here As i have not explored it fully