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