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