This game is a lot about trial and error. After quite some time I managed to reach a point where you have to pass through two diagonal walls shaped almost like this: \ \
At that point, seeing there was more, I quit. I didn't have the patience to learn even more obstacle location and dodge them in the right way, which is already a hard task on its own, even when you remember the course perfectly.
I wrote this review mainly because I wanted to know how close to the end I've got :) so please tell me!