Many games like this exist and non of them was ever real fun - at least not to me.
I don't want to sound like a whiny jerk but all setup for this game really felt like false advertisement.
"Oh look at this stats where so and so much pigs died in contrast to how many people got the level finished."
Ehm, jeah - you HAVE to die to finish this thing, right?
That has nothing to do with being difficult. You achieve difficulty by testing the reactions and context-sensitive abilities of gamers, not by saying "Look here, nothing's there. Good luck."
I guess there has been put a lot of work into this thing but in the end it's just one in the middle of hundreds.