First off, the game looks amazing. The characters look good, but the environment is especially gorgeous, with attractive models and a luscious color palette. And watching the scenery change through the seasons is a particular treat. The game also sounds very good, and controls smoothly. A very impressive effort for such a short time span!
This is quite a complex game, and this understandably brings something of a UX/UI challenge. With the enormous number of distinct resources in this game, I had a lot of difficulty figuring out what each resource was, where it came from, and how exactly it should be used. If each resource had a name, I somehow missed it; I think that would have helped me to keep the resources straight. While the upgrade tree features some very useful upgrades, I didn't know how to collect the right resources to fulfill the requirements; I would just wander around and whack everything I saw, hoping it would yield what I needed. Some tooltips could have helped a lot, I think.