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