Here is the full list of all 20 Expeditions: A MudRunner Game achievements.
Recover your vehicle to the base over 100 times
Fix 10000 points worth of damage in total
Complete all expeditions in Arizona
Earn 1 500 000 credits in total
Purchase 20 vehicles
Fix 2000 points worth of damage in total
Pick up 100 removable anchors
Earn 500 000 credits in total
Purchase 10 vehicles
Complete all expeditions in Carpathians
Purchase your first vehicle
Complete all expeditions in Little Colorado
Recover your vehicle to the base over 5 times
Find your first upgrade stash
Install your first car upgrade
Complete your first expedition
Complete any expedition, earning at least 1 bonus reward
Drive a total of 100 km
Drive a total of 200 km
Complete all expeditions in the game