I agree with this, I think you would need a bit of invincibility or maybe when you are stunned and are not climbing then you cannot get stunned again. Also it felt a bit weird to me that there was no score. Maybe if you added a "Highest Climb" stat it would give an incentive to the player. In the current set up it just records where I am in terms of height and I did not feel I had a reason to play because there was no stat that showed me "Your maximum height was..." I feel if this was in the game it would be very very addicting trying to beat your maximum height after you have fallen and would make you want to climb back up the ladders to pass the height you set for yourself. Maybe replace the timer with "Highest Point Reached/ Highest Climb" Stat