Here is the full list of all 16 Crumple Zone achievements.
Came in first for the first time
Completed the campaign mode
Wrecked your first car
Completed the arcade mode
Came in first or survived last for 50 times
Collected a total of 10.000 crash points
Collected a total of 50.000 crash points
400 "Bump" scores achieved
400 "Scrape" scores achieved
400 "Smash" scores achieved
400 "Heavy Hit" scores achieved
400 "T-Bone" scores achieved
400 "Whiplash" scores achieved
100 "Final Blow" scores achieved
Survived with less than 1% car health
Won derby on USS Mayhem