and a way to disable timer when he goes in the castle
You dont have a game link so im not entirely sure what kind of timer you have. If you have a timer tab that is feeding numbers into an alert which shows the number of time you have left then you could try adding a switch right after the timer (On the ON position) and when the level ends you could make the switch turn off, thus disabling the time.
To make the time faster would be to apply a second timer alongside the first but make it have a 0.5 second delay so the timer will go down twice as fast. (Also add a switch in front of it too to stop it 
I may not have explained it too well cause like I said, not entirely sure what ur going for or game link, but I hope that this might help. Im not too good at this kind of thing so you might have to ask someone else with higher knowledge if this didnt help.
heres the link, just give me a screenshot of what im supposed to do:
https://flowlab.io/game/play/984068
I would, but i’m afraid I don’t have enough time to do anything anymore. Try asking some of the more higher intelligent being.
Try to use a timer set to 0 with a repeat forever. Count down by using -1 and use a filter to stop it when its less than 0.
could you give me a screenshot
https://flowlab.io/game/play/984068