After receiving Feed-back I have made some serious changes to level 4.
Level 4 has been re-worked with a shorter distance between each checkpoint as well as an overall shorten length of the whole level.
Some obstacles and hazards have been removed to allow for more of an approachable early game challenge.
The collapsing floor timer has been increased slightly to give players more time.
The "Parkour" tutorial has been re-worded and a new tutorial has been added (parkour2) which will show after reaching checkpoint 2/3 to further explain the mechanics of the game.
Hopefully these changes will create an easier experience on players learning the parkour mechanics of the game while still providing a challenge.
Thanks!