Here is the full list of all 28 Organ Trail: Director's Cut achievements.
Make it to Safe Heaven without starting with any food or buying any food.
Your party dead, you made it to Safe Heaven alone.
Make it to Safe Heaven without starting with any money or selling anything.
Always choose to shoot your way through zombie hoardes.
Use 50 medkits
Kill 500 zombies
Put down an infected party member who has passed out.
Scavenge more than double the supplies you can carry.
Kill "Ryan" at the start of a game.
Find your own grave.
Kill all the other members of your party while they are healthy.
The station wagon breaks down 4 times during the trip.
Don't pull the trigger
Kill 25 zombies without missing a shot.
Successfully forde a horde of zombies 3 times.
Stop at 50 tombstones.
Beat the game on hard.
Make it to Safe Haven with George Romero in your party.
[Secret] sacrifices himself for the greater good.
Fully upgrade your station wagon.
Survive all 3 boss encounters.
Investigate 30 points of interest.
Someone died of dysentery.
Get attacked by zombies 20 times during scavenging.
Have $1000 on you.
Beat the game without trading anything on the road.
Become a zombie.
Beat the game five times.