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