1. Yes, the concept and the goal was clear. The npc is a creative way to distribute instructions. I also really liked the art style.
2. The shovel works well and I think it is a fun mechanic.
3. I think there were some problems with the screen size because the game was not on the screen fully. Otherwise, It is really well-made and a fun puzzle game. I liked that you put a transparent image to guide us with the puzzle.