This is a repost from NGU. All credit to original poster, R4zGr1Z. I have not used or tested.
Comment from thread about what pops:
Good morning,
after a user's request, I'd like to share with you my platinum trophy of Assetto Corsa.
Enjoy!
AC platinum trophy
Comment from thread about what pops:
I tested the save its nearly instant platinum 81% trophies pop in 10 min.
1) Go to career N1 novice series 1 and go terminate 1 lap (with no damage) and quit
2) Next go to special events german fury hotlap and terminate 1 lap and quit
3) Next go to practice track nordschleife and car ferrari FXXK and go 300 por hour trophy pop and finish 1 lap 2 trophy pop go quit
4) Next go online and finish 1 race trophy