(Opinion of the first build)
The art (for now) is so minimal but it works. It is clear and the colors are nice.
In the tutorial screen I didn't notice the letter X, so I didn't understand what to do at the beginning.
When I understood it, it was simple but interesting. A highscore game suitable for a jam like this.
Now I must clarify that this is my personal opinion.
The only real problem I have with the game is that using the arrow keys to rotate the character is not comfortable at all.
I would recommend using the mouse to control the direction or having the character stand still in 3 directions (relative to the arrow keys)
Again, it's my opinion. I don't know what others will think.
Oh, also a little text at the beginning explaining it would be nice.
Good job, with some sounds and better controls this game would be very cool.