It was very cool getting to see this game in its early early stages and I am super impressed with how much you guys built upon the initial prototype!
I was also quite impressed with the variety in platforming, I think it is quite easy for platforming to get monotonous so the fact you included things like moving platforms and climbing walls to expand on it really stood out to me. I also like how different each stage was visually though I will admit the jump between them was a touch jarring at times, maybe the inclusion of a little screen/still to introduce the level and environment might be something to consider!
The writing of the game was charming and straightforward and it centered the themes of the jam effectively.
As for the visuals, I think the creatures are all really cute! And the sheer variety is definitely something to be proud of. I do think that levels like the second one fall a bit short considering how detailed others are but given the time frame I understand that the details of a beach are not the top priority.
Overall I think you all did a great job! :}