Nice artstyle and very energetic music. I liked the track 1982. I got owned by one of the grass spires coming out of the ground at wave 4. It also started getting a bit laggy at that point.
The reverse snake concept is clever. It kinda breaks down with the little shapes following you around and all the random obstacles but its still a cool idea.
And its also a nice twist on the theme. You're running away from the "main character", the snake, and as one of the "game elements", the apple, you're just one of the little guys. Thats my interpretation at least.
The game in general is very polished (aside from the performance issue)