The art style and especially the music was really good. I like how there were multiple areas each with their own themes, and how different mechanics were introduced in each of them. The humour was great and the ending was also sweet. Also the gameplay was pretty creative, how you have little buddies each with their own roles.
However for me it wasn't the most fun due to how simple it was. My favourite sequence was the ending of the underwater sequence because you had to time everything with the fishing guy pulling down the hook. Meanwhile for me personally the rest of the puzzles were a bit boring.
But that doesn't make it bad at all! I think it's still a great game and amazing job for your first jam!