Hey, thanks a lot for your feedback, we really appreciate it.
And we love to hear that you like our artstyle :)
Regarding the progession system we are currently thinking about how to implement some kind of progression, but unfortunately we can't promise anything at this point in time :) Nonetheless we are planning to upload an update (focusing on bugfixes, better controls and a story update) as soon as it's allowed to upload updates according to the Game Jams rules.
So maybe you'd like to give it another try when the update drops :) We'd really appreciate your feedback :)