Here is the full list of all 48 Overland achievements.
Drive out in a van.
Clear the East Coast blockade.
Escape the East Coast without losing anyone.
Complete the introduction.
Travel 1000 miles in one trip.
Travel 2000 miles in one trip.
Revive a survivor.
Drive out in a truck.
Drive out in an SUV.
Clear a biome without killing anything.
Invite a dog to join your party.
Give a dog some nice pats.
Trade items with a camp.
Steal items from a camp.
Escape an Out of Gas scenario.
Clear a biome without going over five fuel.
Put every equipment on one person.
Put every attachment onto one vehicle.
Complete the game without inviting any humans.
Complete the game without inviting anyone.
Complete the game with your starting car.
Complete the game with your first character.
I mean, we all have regrets.
Collect every item.
Find every creature.
Complete the game with Countdown enabled.
Reach the beach.
Complete the game in one trip.
Clear the Woodlands blockade.
Escape the Woodlands without losing anyone.
Discover a Scenic Overlook in the Woodlands.
Discover the Woodlands Landmark site.
Clear the Grasslands blockade.
Escape the Grasslands without losing anyone.
Discover a Scenic Overlook in the Grasslands.
Discover the Grasslands Landmark site.
Clear the Mountains blockade.
Escape the Mountains without losing anyone.
Discover a Scenic Overlook in the Mountains.
Discover the Mountains Landmark site.
Clear the Desert blockade.
Escape the Desert without losing anyone.
Discover a Scenic Overlook in the Desert.
Discover the Desert Landmark site.
Clear the Basin blockade.
Escape the Basin without losing anyone.
Discover a Scenic Overlook in the Basin.
Discover the Basin Landmark site.