Great job but...
The Safe in the Warehouse is far too difficult! I never finished it and then you have to go out again!, Thats horrible...
For all the ones who dont know where to get to lvl 4, 3 and 2:
Just climb up the stairs. Before you get to the roof climb right and then the second Door (if I remember right). Then you can get to the fourth Lvl and there you can find another card.
Very nice game!