It’s quite easy to play through all of the 10 levels und achieve a 100%.
It will take approximately 30 minutes and if it tickles your fancy you can even set up a macro.
Start up the game, without paying attention to the tile elements, just press W-D-S-A repeatedly, again and again and again. This could take up to 30 minutes like previously mentioned.
You’ve got to play everything in one sitting as there is no save option and you would have to start over if you close the application.
It worked on the first try for me and I hope it does so for you too.