Blackberry House Escape

‘Would you like to spend some time in my blackberry house?’, asked your friend. ‘Why not, after all I love blackberries’, you replied. ‘There are many blackberries hidden inside the house and you can have them all if you succeed in finding them but remember that you should also find a way to escape from the house as I will lock you from outside’, continued your friend. The temptation for those sweet fruits was stronger than the fear of being locked inside and so you agreed with the deal. Greed is never a good thing but you have done it again. We just hope that your puzzle solving skills remain good while you try to find the key to the exit.