I enjoyed the first half or two-thirds of the game, but I lost interest after that. The repetitive boss fights felt annoying and unrewarding, the "dramatic" story removed the lighthearted element I enjoy, and the tablet challenges felt tedious and repetitive to me. It felt like the same mechanics, over and over. It eventually became more frustrating than fun. I gave the game a few chances (e.g., gave it a rest, came back) but still wasn't enjoying it, so I gave it up and stopped.
Too bad. Have to say I enjoyed the first game more. I did enjoy the funny dialog, gem collecting, and occasionally fun combat. But they really needed to tighten it up and not pad it out so much with the repetitive boss fights and tablet challenges. That just sucked all the fun out of it, for me.