I've heard this game described as "a mix between Psychonauts and Bastion" due to its playstyle and humor. I haven't played much of Bastion, but I'm a massive fan of Psychonauts. This game is not quite as good as that game (a hard bar to reach, mind you) but it's a really great and charming little adventure. It's a very easy game, with only a couple combat sections requiring much skill; the emphasis here is on the puzzles and collectibles. It's got a really neat artstyle, extremely witty characters, and wonderful gameplay. There's not much to dislike here.
Very mediocre. The cover art reminds me of some of those I Spy dioramas, but in game it mostly looks pretty bland (outside of a few inspired pieces here and there). It uses point-and-click style item puzzles, which luckily are never moon logic-y, but they were pretty boring. Combat is sluggish and just... not great. Voice acting was kind funny (mah frurnd) but the characters are nothing.