Here is the full list of all 40 Wasteland Angel achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
All civilians saved in one level
Finished the Story mode
Location 6 Finished
Mutant boss killed
Drive over 10 enemy drivers in one level
Location 5 Finished
15 seconds of airtime in one level
Killed 5 enemies with one Nuke
50 kills in Survival bonus level
Location 4 Finished
25 kills in Frenzy bonus level
50 kills in Frenzy bonus level
Location 3 Finished
Tank boss killed
Finished a level with over 25% accuracy
99x multiplier
Location 2 Finished
100 Million score
50 checkpoints collected in Racing bonus level
25 checkpoints collected in Racing bonus level
10 special weapons collected (but not used yet)
50x multiplier
20 Kill combo
25 kills in Survival bonus level
Location 1 Finished
10 Million score
Turned 5 enemies into flames with one Napalm
Harvester boss killed
Maxed out the weapon level
20x multiplier
1 Million score
10 Kill combo
Full armor collected
Recharge to full hitpoints in Recharge Area
100K score
5 Kill combo
Tutorials passed
Killed a civilian
2 Kill combo
Killed an enemy driver