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