Great job on this game! Certainly a unique artstyle.
One problem I do have with this though is the fact that the player is right at the edge of the screen which makes the game not feel centred, looking at other runner games, like subway surfers for example, the player is the main focus so they're at the centre (or close enough to the centre) of the screen, I think this is a fix you can make before the deadline to make your game better, good job on making this though! With a scoring system and a randomly generated map!
This is a nitpick, but this isn't really a one-button game is it? You have to click on the buttons, I think perhaps you should get rid of any buttons and just have the player press space to start!