Here is the full list of all 62 MudRunner achievements.
Travel 10 kilometers along the shorelines of American Wilds
Complete all bonus objectives in the challenge "Crane Operator II"
Complete all bonus objectives in the challenge "Freight-Ex"
Reach the top of any 2 of 3 mountains in the "Island" in one game
Load up Type A vehicle in the trunk of your truck and drive it for 200 meters in total
Find and visit 2 fluorescent flower meadows in the "Downhill" at night in one game
Complete all bonus objective in challenge "The Expedition"
Load up a truck and drive to an Lumber Mill without releasing accelerator
Finish a level using only one vehicle in Single Player mode
Complete the "Deluge" in Hardcore mode
Drive through water so that your vehicle is submerged and then escape without the engine stalling
Complete all bonus objectives in the challenge "Cross a River"
Complete all bonus objectives in the challenge "Visit Grandma"
Fill a particular Lumber Mill by using Type B-130 only
Reach all Watchpoints on any level with the Type A-3151 vehicle
Finish a level without using the Navigation map in Single Player mode
Finish a level without changing any vehicle addons in Single Player mode
Reach speed of 40 km/h with a loaded truck
Reach all Watchpoints in the "Deluge"
Unlock all Garages in the "Deluge"
Travel 100 kilometers
Finish a level without reaching any Watchpoints in Single Player mode
Complete the "Downhill" in Hardcore mode
Fill up other player's trucks with 1000 litres of fuel in total
Squelch 50 pumpkins in total
Reach all Watchpoints in the "Downhill"
Unlock all Garages in the "Downhill"
Drive with the parking brake engaged for 200 meters in total
Complete all bonus objectives in the challenge "Delivery Mission"
Complete all bonus objectives in the challenge "Crane Operator"
Complete all bonus objectives in the challenge "Night Safari"
Complete all bonus objectives in the challenge "Climb a hill"
Complete "The Bog" in Hardcore mode
Fill a particular Lumber Mill by delivering Long Logs only
If capsized while delivering load, pick and pack scattered logs back
Burn 100 litres of fuel without releasing accelerator
Squelch 50 mushrooms in total
Winch a disabled vehicle out of the water with another vehicle
Repair other player trucks for 1000 points in total
Get in Type A-968m and drive 400 meters or more away
Receive 500 or more damage points from a single impact
Complete the "Crossing" in Hardcore mode
More than 150 meters away from any Garage, tow a fully damaged truck to a Garage
Use winch in Pull mode to tow another vehicle for 50 meters in total
Make a quick 360 degree roll over the roof
Unlock all Garages in the "Crossing"
Reach all Watchpoints in the "Crossing"
Complete the "Seashore" in Hardcore mode
Deliver the load without receiving any damage and switching to other trucks
Fill a particular Lumber Mill by delivering Short Logs only
Load up two trucks and winch them together to reach Lumber Mill simultaneously
Unlock all Garages in the "Seashore"
Reach all Watchpoints in the "Seashore"
Complete the "Island" in Hardcore mode
Reach all Watchpoints in the "Island"
Pass 5 log ownerships to other players
Unlock all Garages in the "Island"
Knock down 100 trees it total
Unlock all Garages in "The Bog"
Reach all Watchpoints in "The Bog"
Complete all bonus objectives in the challenge "Repair & Refuel"
Complete all bonus objectives in the challenge "The Rig"