Here is the full list of all 12 Danger Zone achievements.
Get your first Grand Slam bonus
Get your first Smash and Grab bonus
Fire your first smashbreaker
Earn your first gold medal
Score a x15 or more Smashbreaker score
Score a medal on every simulation
Score 10 platinum medals
Complete Tier 1
Complete Tier 2
Complete Tier 3
Score over $20M in a single junction
Wreck 100 cars in a single junction