When I trigger the bug to make the character flies, half-second after start flying I spamming the jump button until I reach the floor, somehow if you are not doing this, the character dies.

All the credits to MythicCheese for finding this bug

You can jump both piles of books without getting caught by the teacher, you will still to wait until she finished the animation but perhaps you have any idea how to get through the door meantime she is doing the animation or perhaps making noise to stop the animation.

To be honest with all of you guys, I have tried too many ways to avoid the teacher when I was climbing the rope, but I always got caught, so the best way to go climb the rope is to wait until her head is not in the same level of the floor that we are.

This is an alternative to waiting inside the box.

I found that when "Six" is jumping to the bridge meantime you are pulling the rope, you can stop pulling when she is starting to jump.

After being chased by the hunter, you will reach the swamp, he will kick the door 3 times, meantime you can keep walking before the 3rd kick, which is the last time, crouch and keep walking away from the bridge until you are no longer capable to hold the breath.

I reckon this way is much faster than waiting under the deck.

Best of luck runners