Dungeon level editing - Hidden switch

At the start of the level the player must find their way out of a room, to do this they must press a hidden switch on the wall in order to open a gate. Having found this a frustrating task which took some time to complete I decided to add a clue which serves to hold the players engagement.

Faint arrow drawn in blood highlights the switch

Even with the faint blood arrow most test subjects failed to find the switch and became frustrated. 
Using the kismet I decided to add camera cut sequence with musical sting which kicked in if the player had not already found the switch after a specified timeframe. The sequence cuts from the player view to the area where the switch is located, indicating them to investigate this area further.

Here is a screenshot of the kismet set up which shows how the system functions.When the trigger (area within the starting room) is touched it starts a delay, when this delay is finished the cut scene is shown via the matinee sequence. If the hidden switch is used before the end of the delay however the cut scene is cancelled (hidden switch trigger connects to the delay stop input).

Further playtesting with this system will be carried out to asses its effectiveness.