Here is the full list of all 13 Danger Zone 2 achievements.
Get all platinum medals in Region 1
Get 50 traffic car Rollovers in a single crash
Collect 10 gold pickups
Crash 2000 cars
Collect one of every pickup type
First Grand Slam
First Run Up bonus awarded
All Run Up bonuses awarded
All Gold Medals
1km of Drift in F1 car
Get all platinum medals in Region 2
Get all platinum medals in Region 3
Get a 10x Boost Chain