If no one else does it, I might consider it. Since I am almost at 100%, just one more chip and a few parts here and there I need to collect, and everything should be unlocked.

No, unfortunately not, it would require several different saves for stuff like retro mode, because the game starts you off from scratch. None of the unlocked stuff carries over to Classic, Pure Survival or Hardcore modes. Even though that would not be too difficult, one would just have to play through the game three different times.

The only stuff I have unlocked and am on my way to unlocking is just the standard new game+ stuff.

I'm on chapter 11 and can't get past the door interface, man i've tried but my fingers just ain't nimble enough, could anyone post a savegame just after that, many thx if you could.