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