I can defenetly see that the dev in this game tried at least, its a bit fun if you try to play it for a long time, just its a little unfair that the only way you can really survive the enemy's it to Hold the arrow keys in a forward & left or right direction, which led me to guess that the dev haven't added a velocity limit in the movement script, i can say its fun, a little hard but if you play it for a enough time, its really great, Graphics side .... Its simple just a triangle & some square's.
i can see that the dev tried his best here, it looks like he was a bit too late on time, or he/she didn't know to code, but anyway, Good try !