Just 10 minutes and I made it to the end. Trick : Walking - Press 'Q' 'P' together then 'W' 'O' then repeat. Whenever you reach the stairs, HOLD 'O' 'P' front legs whenever you are going down the stairs. Just wait and hold and it automatically 'bounce' down the stairs.
[SPOILER] You will reach a stage with books after that. The floor will crack and fell down into a hole (Why the hell is there a freaking hole out of nowhere?) After a while, a loud alarm rings into your ears (aka ear-rape) with alarm clock shown on screen. (No graphic content, just the ear-rape sound). Then you will just start back to the beginning again.