Here is the full list of all 34 Asphalt: Injection trophies - there are 19 bronze, 9 silver, 5 gold and 1 platinum.
Earn over 2000 drift points in a single race
Complete a Normal Race without touching a wall
Complete a Normal Race without crashing once
Hit at least 1 jump in each lap in a single race
Finish in 1st place!
Collect 25 Nitro power-ups in a single race
Collect all Asphalt trophies
Finish in 1st place 3 times in a row!
Win 10 multiplayer races
Win 100 multiplayer races
Finish 1st in a MP race less than 1s ahead of the 2nd-place finisher
Complete 50 races
Complete 100 multiplayer races
Obtain the maximum amount of stars for all events in a league
Finish every race in Career Mode
Collect 35 Nitro power-ups in a single race
Collect more than half of the purple cash items in a Collector race
Knock down 10 opponents in a race
Knock down 15 opponents in a race
Perform 3 knockdowns in 10 seconds
Perform 5 knockdowns in 20 seconds
Perform at least 3 knockdowns on the same opponent
Knock down each opponent at least once in a single race
Knock down an opponent while drifting
Earn over 3000 drift points in a single race
Earn over 1000 drift points in a single drift
Earn over 500 drift points in a Beat 'em All race
Jump 1000m in a single race
Jump 1500m in a single race
Complete a Normal Race without touching an opponent
Win an Under Pressure race without crashing once
Finish each lap in first place in a single race
Cross the finish line while drifting
Win a race without using Nitro