(adsbygoogle = window.adsbygoogle || []).push({}); i have done it countless times but it hasn't credited me with the achievement

is there any secret door i should be aware of

I'll help you out man.

thing is i've opened up all the doors on my own but i don't know if theres a stupid door somewhere

There is not a secret door. Are you sure you are opening everything?

Do you turn the electricity on?

There are a total of 9 things to open:

Starting Doors-4 Total
Both paths you take make you have to open two doors, costing 750 each. Make sure after you activate the power you go back to the mainframe and get the other doors

Debris-2 Total
After opening your starting doors, there will be some debris blocking your stairs that cost 1,000 to open (If you go through the room with the Thompson, go up the stairs. It looks like it's blocked to the right side, but that is actually debris that you can clear

Teleporter Doors-3 Total
When going either path, you will pass one of these doors. The one past the Thompson room is on your right and costs 750. If you go through the Trenchgun side, make sure you turn around after you get past the fence and you will see another path leading to the door. It costs 1250. And behind the power room, is another door costing 1250

I got this done with people online. It's easier and everybody gets it, so if you can't do it on solo still, try it

yeeah i've got all of them iactually made a crawlers so i could go around and see if i missed any