The game had a nice look to it, but the biggest problem I believe is the lack of consistency. There is no way to tell which blocks were going to kill you and which weren't. I thought it might have been the color pixels at first, but not even that. Instead, having to jump on every block to test, guaranteeing at least a few deaths...
What this basically means than is that this game is pure trial and error. Not only that, but memorization, and some of the stages are long in that respect. This is more like "I want to be that guy" level of trial and error, and that's not enjoyable for a lot of people.
I will give credit to a section in one of the earlier levels where you don't see the exit, which then gives some information on there might being something new (screen scroll), but that's about it.