It was a fun puzzler and I liked the bonus challenges except for when it involved stealth or perfect timing. I prefer the puzzle-based or search-based challenges much better. I got all 3 gems on every level in Episodes 1-3 and in the DLC. I also got all 3 gems in the Special episode up until you needed to 100% episodes 1-3 as that's where I called it a day. Also got every Pixel Toad in the game.