Here is the full list of all 25 Fenimore Fillmore: The Westerner achievements.
Defeat the evil cattleman and his minions.
Get dynamite.
Blow up the bridge.
Free them from an ambush.
Assault the bank.
Find 100 Dollars for free.
Have a bank account.
Release the prisoner.
Deliver an important message.
Win a spicy sarsaparilla duel.
She needs a doctor.
Buy contraband items.
Win the Winchester.
Making more than 50 targets in the last round.
Meet Livy.
Use a tracker to find someone.
Someone is thirsty.
Fish a trout.
Enter into storeroom.
Meet the beautiful teacher.
Saddle and ride your horse.
Meet the oppressed farmers.
Welcome to the Far West.
Send six telegrams.
Finish the game by giving less than 20 carrots to the horse.