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