Solution cheats 100 rooms at level 12, click the left arrow to get to the bathroom, zoom in the box on the shelf and grab a hammer next to the box. Go to another room, and then zoom in to the bottom of the sink and grab the plunger stick.
Go to bathtub area, zoom into the ceiling hole and take the rubber plunger, then combine 2 parts rubber plunger. Back to the sink area and zoom in the top, use a plunger to drain the water and grab the key first down.
Go back to bathtub area, larger part of the wall under the tub. Use a hammer to hit 3 tiles and perforated tiles will then take the second key. The following sequence of three tiles hit the right:
Row 3, Column 5 - Hammer it 3 times
Row 2, Column 1 - Hammer it 2 times
Row 1, Column 6 - Hammer it 4 times
Back to the bathroom and zoom in the box and glue the 2 keys on each of the right image, the box will open and grab the keys to open the rooms level 12.
Now continue to the 100 Rooms level 13 Explanation, or back to the 100 Rooms level 11 Solution