Here is the full list of all 42 New Frontier achievements.
Deploy 500 Campsites.
Use Lockpicking to open 30 Chests.
Kill 100 Civilians or Deputies.
Repair 50 Weapons.
Kill 100 wild animals at Hunting Grounds.
Upgrade 20 Weapons.
Travel on foot or horseback 500 miles.
Achieve level 50.
Complete 100 Quests.
Harvest 200 Gardens.
Sell $10,000 worth of gear to the vendor.
Mine 10,000 Gold Nuggets.
Travel on foot or horseback 250 miles.
Retrieve 100 Meat or Hides from Animal Traps.
Open 10 Treasure Chests without using a lockpick.
Consume 100 Alcoholic Beverages.
Mine 5,000 Gold Nuggets.
Deploy 10 Campsites.
Travel on foot or horseback 100 miles.
Mine 2,500 Gold Nuggets.
Mine 1,000 Gold Nuggets.
Mine 500 Gold Nuggets.
Discover 25 unique locations.
Complete 10 Quests.
Mine 250 Gold Nuggets.
Discover 15 unique locations.
Mine 100 Gold Nuggets.
Unlock 5 Safehouses.
Travel on foot or horseback 10,000 miles.
Kill 100 'Outlaws'.
Use 10 Treasure Maps.
Consume 100 Magic Dust.
Acquire 50 kills using only explosives.
Open 500 Treasure Chests without using a lockpick.
Discover 100 unique locations.
Kill 1000 Civilians or Deputies.
Kill 5000 Civilians or Deputies.
Kill 1000 'Outlaws'.
Use Lockpicking to open 500 Chests.
Complete 500 Quests.
Use 100 Treasure Maps.
Travel on foot or horseback 1,000 miles.