Here is the full list of all 38 Hard West 2 achievements.
Finished the game on the Nightmare+ difficulty.
Finished the game on the Nightmare difficulty.
Finished the game on the Hard difficulty.
Maxed out loyalty with Old Man Bill.
Form sets of Full House with 4 posse at the same time.
Finish "Riftwalkers" in no more than 10 turns with all objectives completed.
Finish "Blasting Out" in no more than 8 turns with all objectives completed.
Finish "Fooling The Hangman" in no more than 4 turns with all objectives completed.
Killed 60 Hellspawns.
Collected every card in the game.
Finish "The Great Train Heist" in no more than 10 turns with all objectives completed.
Maxed out loyalty with Lazarus.
Completed a mission using only Rifles.
Form sets of Royal Flush with 4 posse at the same time.
Form sets of Straight with 4 posse at the same time.
Maxed out loyalty with Laughing Deer.
Finish "Wanted: Lady Shrike" in no more than 15 turns with all objectives completed.
Finish "3:10 To Heaven" in no more than 1 round with all objectives completed.
Finished the game on the Normal difficulty.
Finished the game on the Easy difficulty.
Completed all world map side objectives in Chapter 3.
Finish "One Last Ride" in no more than 12 rounds with all objectives completed.
Killed 666 enemies.
Visited every location in all Chapters.
Maxed out loyalty with Flynn.
Finish "A Plague Upon This Land" in no more than 12 rounds with all objectives completed.
Killed 80 Revenants.
Maxed out loyalty with Clalish.
Killed 50 Shadow Dancers.
Completed all world map side objectives in Chapter 1.
Finish "Frostbitten in Calla Calla" in no more than 10 turns with all objectives completed.
Finish "O'Kane Farm" in no more than 8 turns with all objectives completed.
Finish "Flynn's Vision" in no more than 10 turns with all objectives completed.
Killed 100 Bandits.
Completed a mission using only Handguns.
Finish "Daredevils" in no more than 8 turns with all objectives completed.
Completed a mission using only Shotguns.
Completed a mission using only Melee weapons.