The amount of polish on this game is absolutely stunning. This is easily the most polished and professional-looking game I've ever seen in a game jam. The modeling, animation, and effects all make this look like a fully-complete triple-A game. The presentation is absolutely top-notch.
Not only that, the gameplay is very solid and well-balanced. Movement feels great and fighting the boss feels skill-based and fair. There are several fun ways to dodge and attack him through the various sequences. All of these things also feel very triple-A.
The progression and ability to customize and upgrade the boss is unlike anything I've seen before. It's so interesting how it rewards you for punishing yourself. It makes your interactions with the boss quite personal - because you made him that way!
Your team has serious talent and you all should be proud. This is probably the finest jam game I've ever played...