The hazard of having so few testers on a puzzle game is there are bound to be alternate solutions that don't get caught. By the end of the game it felt like 50-50 odds that a level would be beatable without using all the pieces, even while getting the emblems... even 4-24 and 4-25 had easier solutions. Also the very frequent Custom([file_write,stderr]) crashes were a bother, though fortunately they never lost me any progress. But when it's working, it's working well. Good readable graphics and good commitment to a single moveset. I had fun 105%ing this.