- Grid: Drive a total distance equal to the circumference of the world. Even after doing every other trophy, you'll still be nearly 30.000km short of this and need to just drive for nearly 100 hours at 400km/h.
- Tetris Effect: Spin the tetris blocks a million times. 1.000.000 of just spinning the blocks.
If there is a good multiplayer component I think these might even be in the ballpark of getting them naturally. You really have to love the games though.
I would assume racing pros easily get to 100+ hours in their favorite racing games. I assume 200km/h might be more realistic as an average which brings it to 200h? Unless there is some dumb oval course with some fantasy car that actually can hold 400km/h grinding along the wall? Still much, but some trophies are just grinds and not skill based at all. Certainly kinda dumb but still not entirely ludicrous like your other and others' examples with stupid time constrainsts, wr or hardly healthy marathon sessions.
Iirc I had 100k turns or something after not finishing a lot of stuff in Tetris. Asking a serious grind from average people is probably anyway necessary to get good. They probably have to play it that long until acing the insane challenges. I assume close to 200h for that, at crazy play speeds. But doing even A ranks is beyond my level, so no idea how to get SS on everything. I also doubt even with that serious training regime of 1mio turns I would actually get there, but there is a difference between a mindless grind and an insane drill. Hardly for everyone.
Or just use a stick with autofire which still takes some time I guess, but should make it rather convenient but even more dumb. If I would own a stick it would not be beneath me to do that. Rubber banded enough other shit already. But I guess no one can cheat their way to the Tetris Platinum that way, just a lousy grind trophy, since the SS-rank requires actual skills.