Here is the full list of all 42 Need for Speed Heat achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Complete 25 events online with other players
Take down 100 Cop Vehicles
Go from last to first place during the final lap of a race and win
Hit 240 mph using any car
Get all Collectibles and 3 stars on all Activities
Collect all the Flamingos
Collect all Street Art
Smash your way through all the Billboards
Get a 3 Star Rating on all the Activities in the game
Complete all Speed Traps
Complete all Drift Zones
Complete all Long Jumps
Earn and bank 1 000 000 REP during one night
Complete 5 events online with other players
Win a race with all vehicle effects slots equipped
Pick your first ride
Complete Chapter 1
Complete Chapter 2
Complete Chapter 3
Complete Chapter 4
Change the text on the License Plate
Beat your first Crew Time Trial
Win a race with a car at 399 Performance Rating
Complete the Drift driving story
Complete the Off-road driving story
Complete the Race driving story
Customize a vehicle with a wrap
Complete your first Daily Challenge
Win a race with parts equipped in both auxiliary part slots
Escape 100 Cop Chases
Repair critical damage at a Gas Station at night
Win a High Heat 5 race and return to garage safely
Reach max Crew Level with your Crew
Win a race with handling parts for maximum drift equipped
Win a race with handling parts for maximum off-road traction equipped
Win a race with handling parts for maximum road traction equipped
Win a race with handling parts for maximum race equipped
Reach REP Level 2
Reach REP Level 50
Win a race in a vehicle with an engine swap
Win the Discovery Event
Win a race in a vehicle with tuned exhaust sound