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