Hey thanks alot man, I can confirm the following trophies..
- "Discoverer" - Complete any race any position.
- "Perfectionist" - Complete last track in scenario mode (any difficulty, forgot if you have to win)
- "Best of the best" - win the last scenario track in 1st place on HIGH difficulty
- "Executioner" - Choose the track "Vatican" In scenario mode any difficulty and kill the truck type of car for the trophy
- "Challenger" - Complete any challenge with full challenge requirements
- "Challenge Accepted" - Complete any challenge with full challenge requirements
- "Millionaire" - Go into the garage and upgrade any car with parts until your money goes under 1 million, then simply win a race earning 1 million again
- "Beekeeper" - complete scenario track "Tokyo" without dying
- "Sprinter" - game type -DRAG race, track LONDON.. Shift gears manually once down hill starts shift to 7th and boost to finish line. may take few tries
- "Champion of the season" - complete last scenario track for trophy
- 'Champion of Europe" - In championship mode, complete any track race in Europe. (I won so i don't know if winning is required)
- "Champion of Asia" - In championship mode, complete any track race.
- "Champion of America" - In championship mode, complete any track race
other trophies without save:
Completing the tutorial will force you to earn:
- "First Blood" - Kill your first enemy.
- "First Explosion" - Demolish your fist building.
- "Chicken" - Make your first jump.
Now go into scenario mode and place top 3 in the first scenario mode this will unlock the next track and a car.. Try to place top 3 in both tracks, now you should have enough money for the following trophies:
- "Test Drive" - Buy your first car.
- "Rearming" - Buy your first weapon.
- "Mechanic" - Buy your first upgrade.
By this time you should have earned the follwing trophy already, if not then, WIN ANY RACE.
- "First Victory" - Win your first race.
By following the guide above, you will now have 70%.. I tested the other trophies and nothing else pops, Thankfully the uploader has said he will work on the rest of the saves.
The uploader worked so hard on this plat save.. Before even downloading the least you should do is give him a Thanks, at least out of some decency

These saves are the best I've seen so far on NGU, I truely appreciate it buddy, great work! This thread is epic!
{EDIT} > For most of the above trophies, I recommend choosing the follow settings before any race. choose "CLASSIC MODE"
This will turn off respawn, meaning you can stay back and kill most of the players and they will not spawn again, or just start off in 1st place and don't slow down, either way they eliminate each other making it way easier. Many times your the last remaining racer, now you just have to complete the race. Also DO NOT CHANGE CARS, the car from the uploader's save in my opinion is the best car, has the best track grip and is just perfect! Once again Thanks ipkiss0727.