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