Ohhhhh, I remember this part so hard.
I think it's almost impossible on difficulty bigger than easy. Why? I tried to do for 6 MINUTES, and even if it worked, it was a huge waste of time. I managed to get to checkpoint, but a moment later I died. How I did it? Lucky jump. I think there is 1 to 10000 chance to go through.

PS: Imagine how red my eyes were after competing this part. When I passed the level, I went to my bedroom and started jumping, swirling and hitting on my bed making weird noises, to remove the stress.