I know it is supposed to be hard..
I know it is supposed to be hard, and I love challenging games like this, but the difficulty on this game just made me quit around level 5 or 6. Maybe it's great for someone real hardcore, for me it just got annoying spending a lot of time reaching nowhere, so I quit, sorry.
Another problem is the timing and pacing of the game, sometimes I had to do insane control inputs just to get somewhere without dying, and in the same level I had to wait like, one minute (or more), just so that every hazard would be in the correct position so I wouldn't get killed. It really kills the pacing of the game, especially right at the start of a level (where you must have died before).
The rest was just sweet and great, just like the first one, one of the best. Good job.