I really liked the UI, the only thing is that the text disappeared a bit too quickly, which made it hard to read. Also, I’m not sure if this was intentional or not, but after dying, I couldn’t restart the game because the button didn’t work.
On the other hand, it’s a pity there wasn’t any sound (or at least I didn’t hear any), since that would’ve added a lot to the experience.
Congrats on getting something functional done in just three days!