Haha, I had no idea about that. I definitely didn't purposely code that in. Though I may add something like that in future, I wouldn't do it without notifying the player first.
Did the level just end after you died and loaded up level 10?
Or did you mean because level 10 is a lot easier? If it's because it was much easier than level 9, it's because I was just introducing a new mechanism, the portal. There will be much more challenging levels to come.
But, if what you were saying, was that the game put you on level 10 because you took too long, then this will need addressing.
Thanks for your feedback. It's much appreciated.