Look at the shelf to the left of the door. Look at the bottom right corner of it and you'll see the box. Open the box and take the hammer.
Tap the cabinet behind the broken TV on the table. Tap it once you're zoomed in to remove the cloth. Use the hammer to break the glass then take the key.
Use the key to open the locked metal box on the ground near the door. Take the cutter. Use the cutter on the table with the four screws. Take the key.