Looks very good. I will try this in the Student software later
Just note that it's not really optimized for the student software so those glitchy lines will appear (I fixed the horizontal ones but vertical ones are still there) and the title screen will be pulsing very quickly.
On another note, I am thinking about changing the graphics, as I'm aware that plain squares look quite boring, though it still has to be very basic (no sprites, as I have to be able to set the color). I'll probably make the terrain have rounded corners to look more natural, and for the character I'll have a set collection of character shapes, one of which will be randomly chosen each time. And per request by the main branch of LD, grass will also be added in the next update to spice up the landscape.