Here is the full list of all 49 Mad Max achievements. It takes around 50-60 hours to unlock all of the achievements on Windows.
Collect all History Relics
Loot all Scavenging Locations
Complete all optional objectives in all camps
Complete all Wasteland Missions
Build all projects in all strongholds
Complete all non-repeating challenges
Complete a Death Run in legendary time with every Archangel
Successfully complete a Death Run with every Archangel
Take out all Scrotus snipers
Clear all minefields
Reduce threat to 0 in the Parch Moon region around Gutgash's Stronghold
Destroy all scarecrows
Reduce threat to 0 in the Balefire Flatland region around Jeet's Stronghold
Take down all Scrotus camps
Clear all threat in Gutgash's territory
Collect all hood ornaments
Clear all threat in Pink Eye's territory
Own the best V6 and V8 Engines
Defeat an enemy vehicle with every Archangel
Complete at least one race at every Death Run Location
Fly the balloon at every Vantage Outpost
Clear all threat in Jeet's territory
Be airborne in a vehicle for 4 seconds or more and land without dying
Collect all body colors
Reduce threat to 0 in the Knit Sack region around Pink Eye's Stronghold
Complete a Scatter Death Run
Have 10,000 scrap in your inventory
Complete a Time Bomb Death Run
Have 5,000 scrap in your inventory
Fully upgrade Max
Complete Act 05
Reach Road Warrior legend rank
Complete Act 04
Complete Act 03
Complete a Death Run in an Archangel
Take down a Top Dog camp
Build two projects in Pink Eye's Stronghold
Build two projects in Jeet's Stronghold
Complete Act 02
Build two projects in Gutgash's Stronghold
Give water to a wanderer
Eat a meal of maggots
Complete the Dinki-Di Wasteland Mission
Complete a Barrel Bash Death Run
Reach a new legend rank
Complete Act 01
Travel 650 car lengths on foot
Drive the Magnum Opus off a Wasteland jump
Travel 1300 car lengths in a vehicle