Update: The achievement is possible, FYI. The game wasn't patched, and is still very glitchy. However, if you focus only on stacking the green blocks vertically, you can make the target score. This is much more difficult than intended, but using fewer blocks will delay the game from glitchy mechanics. Good Luck!
This achievement is a bit glitchy. I guess you could even say, it is.....full of bugs
But seriously, the Xbox One version of the game has an issue with stacking where the blocks will inexplicitly begin shifting to the foreground or background. Since this is a 2D game, you cannot control (or seemingly even prevent) this movement. Since the game regularly has this issue, it is virtually impossible to get the Gold time, let alone the achievement requirement.
While requiring a certain amount of skill, this achievement would be quite simple if the mechanics worked right. Just to give some perspective, below is a YouTube video of the Steam Version and a clip of me playing on the Xbox One. You can notice clear issues with the stacking.
Steam: (check it out at about the 10:30 mark)
I have just messaged the devs (and publisher and port team for good measure) concerning the issue. I will be sure to update when/if I hear back.