I also feel bad giving this a low score, because it seems you put some thought into how you wanted this game to play and in what manner the level design was going to challenge the player. The problem is, I just don't find it fun. It's like a mouse wall-avoidance game mixed with a runner that moves a bit too fast mixed with a platformer with impossible jumps and too many spikes.
I expected it to be frustrating due to the description, but when I died just by hitting the the face of the first block (later I noted all the tiny spkes) , I was like, "Uh oh..." It didn't get much better. I haven't gotten past the first 10 seconds of a game after 100 attempts, something isn't right. A truly challenging game allows you master it with persistence, presenting you with harder and harder objectives as you progress. I guess the point of this game was to be nearly impossible from the start. But it leaves me wondering, "What's the point?" I never got more than three coins, and suddenly realized that even though I was memorizing patterns, timing, and mechanics, I somehow wasn't getting any better at the game.
I do want to give you points for making one of the toughest games on the website. The gameplay is actually very smooth, which I appreciate. Others have complained about the control or the jumping delay, but I didn't see any issues. There's no to crappy control or laggy gameplay. The game runs really well. The level design is nasty and every aspect of the mechanics are tweaked just enough to make the game unbeatable. You even keep the level randomly shifting to keep the player from developing a good rhythm as the attempts pile up. But in the respect, the game is more of a gimmick to me. It's a like a side show attraction; you go to see the freaks, but you don't want to stay too long or look too hard.
However, you seem to have been very successful in hat you attempted. :-)