Absolutely a masterpiece. Needs some work because the physics gets crazy sometimes and planks start flying, but besides that, this is really a 10/10 entry. I loved that you mixed two themes and participated in two game jams at the same time. Also, the level structure and progression is very nice, like World of Goo. I think you should be proud of making this in only 9 days, it's really WAY MORE than I would expect from a short game Jam. The art is also top-notch. Congratulations!
edit: Oh you are the ones from "Over The Top" and "With You in Spirit". I declare myself fan of your games and art. I really hope not only you win another jam (you won #7 right?) but following to get more about your games and future products!