the game is really interesting and fun but after the part where you encounter the glitch it becames unnecessary difficult.
first example: there is a point where you can go down on some small tubes just to find that there is nothing there and you have to go back up jumping on some red cristals or something. the grap on the cristals more of the time will get you on top but just after, it will let you fall.
second example: exagonal tubes and sliding parts. the shape of the exagonal tubes makes it difficult to lend on them and impossible to grab on them. while the sliding parts are just difficult in a bad way, in my opinion.
wonderful game but those few things got me to quit playing. I lost so much time in some points that become frustrating and unpleasant