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