Here is the full list of all 29 Rustler achievements.
The base game contains 28 achievements, and there is 1 DLC pack containing 1 achievements.
Complete 100% of the game, including all quests, side activities, and obtaining every other achievement.
Complete 100% of the game without dying nor getting caught even once.
Gain and then remove a maximum Wanted rating without dying and with no quest active.
Survive for 5 minutes at maximum Wanted rating.
Come first in 10 races.
Catch all horses for This Neigh Land.
Complete the main story line.
Kill 500 people.
Use Pimp-A-Horse 20 times.
Wield all weapons available in the game at least once.
Complete all quests for Salazar.
Kill an NPC with a cow.
Complete all quests for the Spanish Inquisition.
Complete all quests for the Herbalist and the Doctor.
Collect all horseshoes.
Collect 5000 gold pieces.
Plow the fields 10 times.
Collect 20000 gold pieces.
Collect 20 bodies during the body collecting side activity.
Herd a total of 50 NPCs to mass during the church herding side activity.
Complete all quests for the Loan Shark.
Win 10 fights in the MMA side activity.
Complete all quests for the Priest.
Complete all quests for the Knights of the Holy Grail.
Kill 5 NPC in 5 seconds.
Complete the first quest.
Set the amount of blood particles in settings to x5.
Block 10 attacks in 60 seconds.
Successfully complete the Halloween event.