Park Lane hatch- 4864 Arboretum door- 3376 Decontam 3 override- 2734 Kremlin Emergency hatch code- 0756 Kremlin main hatch code- 3471 Storeroom box code- 3172 Storeroom 2 code- 5748 Biolab Computer code- 2915 Downing Street hatch- 1010 Arkham Dorm locker code (you have to examine Oba's note in dorm 1 for it to work)- grey, dark grey, grey, light grey, white, dark grey The code for the box in the Dorm 4 (you have to use the spectrometer on the painting in the Kremlin for it to work)- 5637 Whittaker airlock code- 9689 (you have to unlock the chest the code comes in and examine it for it to work)

The password for the bulkheads in PARK LANE, but you don't need to remember it, but you do have to examine the note with the code in order for it to work.