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