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