I recommend you to try Rollin - Reach 15 in endless mode yourself. Should be doable within a few minutes.

Start with the game closed.

Enter registry: Win + R -> type regedit, hit OK.

Go into this path: HKEY_CURRENT_USER\SOFTWARE\Rainbow Train\oO

Search for endless1_h285575026

Open it and change the value to 65 (hexadecimal) or 101 (decimal) (or any other value over 100) -> hit OK

Open the game, start a endless round, die immediately, go back to the menu. The achievement(s) should now pop up.

I haven't found the right registry entry to manipulate, to 'finish' levels 1-4. I don't now, if there is any. So try it yourself, it's doable!