Too much?
I enjoyed the game, beat it on normal, but couldn't really stand to play hard.
Playing through normal, it was fine for a while, though I disliked how some of the levels were really focused, while others were barely even a challenge, it seemed to break the game up. I disliked how later levels the snake was too large and clunky, I'm not sure if I'm the only one who had this problem but it seems like the snake gets too big to even dodge enemies effectively since the body barely moves half the time.
Playing through hard seemed too much of a rage-quest, as using mouse controls with that allow you to u-turn onto yourself made it a lot more difficult (at least for me) to stop myself from commiting suicide, much less completing some of the levels.