I have a problem on the hatch and I have to find the secret door does anyone know where it is?

hi m8 do wot i did go though all the numbers by starting at number 1 and so on as i cant think wot the number was when i did it

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GATMAN2008

the door is out side its by the water fountain walk thought it and the door is at the end but it will tell u when u get to the door u need to blow the door open which then u need to go to black rock

Hey, when I made the three fuse boxes and pull the switch, the computer room turns blue and there's a map on the blast door. It tells me that there is a secet door but I can't leave the computer room because the blast doors are closed...
Please help me

Don't worry about the secret room yet, you have to go to the black rock first. Use the computer to open the doors.