Successfully complete the game.
Complete the indicated task to unlock the corresponding item for purchase at the store.
While attempting to earn the "Ship Overboard" achievement or trophy, once you enter the door behind the filing cabinet there are three metal doors in the hallway. If you activate the doors. Cave Johnson talks about the tests. Activate all three doors and the achievement or trophy will be unlocked.
Go to Chamber 2, Test 06. Move through the aerial plates to the button, then press it. After the garbage disappears, keep the first portal on the platform and shoot the second one above the large red button. Press the button again and wait for the box to drop down.
Play Chapter 2 "Test Chamber 6". Get the radio that appears in a clump of garbage into a window above the chamber after you hit a button. Work your way back through the level and place a portal on the pad across from the window. Use the launchers to get through the portal and into the room past the window, with radio in hand. Take the radio up to the wall to earn the achievement or trophy.