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