I really loved the game visually. I think you did a great job of making these rather simple shapes and scribbles very personable.
As an idea, I really like making your hp and size tied together. I think it was well executed and easy to understand.
Having the risk versus reward of melee vs long range was also very nice! I like the idea the melee attacks are practically insta-kills on enemies but you run a much higher risk of getting hurt in the process. However, I do think it might skew a little to far on the risk side of things, and perhaps if you choose to update this post jam, you should consider adding some sort of wind up to the enemy attacks to give the player a slightly better chance.
Overall, really nice work, I liked it. The orange block is my favorite (well and truly adorable.)