This game is absolutely bizarre in the best way possible. Very simple and honestly a little addicting. The visual style and audio design go really well together and mixed with the concept it's just absolutely delightful.
My one thing concern is mainly about what causes the hammer to move and change speed and everything. I couldn't recognize any real pattern and while it does add to the chaotic nature of the game it would have been interesting to see it a little more controlled by the player, perhaps by how many nuts they have smashed.