Ok, click the switch in the hill, and the staircase lights up, click the right arrow in the hill, then click the staricase and it moves to the right. The box that spits out bombs has a pink bar on it. click the pink bar after blowing the door off the house, and you can climb over the box, down the stairs and into the house. (must keep stairs by the bomb box, but that was the best descriptive to show you the pink bar) once in the house, open the window, the guy slams it shut, knocking the blob onto the ground.
Take out the electric fence Via bird bomb, and then click the blob. He will run over the creature box and hang out in the water. Make the water flow to the left, and click the left arrow in the hill. Click the staircase and it will move to allign with the creature box. Click the doorbell and the guys runs out of the house, on top of the creature box, falls off the side, and the dog on wheels busts out of the box, smashing the guy. The leftward current in the water allows the dog to avoid the proximity mine and the blob eats him. That's all I've got...