ok, top of the shelf theres pliers, get those, cut the box in the second drawers with the plyers, take the flower pot, plant the seed obtained from the apple (in the top shelf, eat it) and water it with the cup which is beside the couch. grab the wire from the box, use the pliers on the tip, and opened the locked box on the bottom shelf, grab the screwdriver, uncrew the clock, take the battery chargers, take the battery from the clock. put both batteries (one is in the plant beside the couch) in the charger, and plug it in under the computer. once its done charging, take the batteries, put them in the remote (which is beside the couch), turn it on, put it to 30, put water in the plant, wait till it grows a bit, put the temp to 14, water it, wait till it grows a bit, take the key from the plant and use it to open up the briefcase (under the couch)
oh and the key in the ashtray by the couch opens the drawer of the desk, which has files, and page #4 can be seen in the dark.