Hey so I have watched the WR around 10 times and still have not figured out how they open the door with just one key. So if anyone is able/willing to explain it to me i would be so greatful!!

if you downpatch your game you only have to grab the noobnoob key. the downpatch is available in guides.

Ah thank you so much! thats what i thought but i wasnt 100% sure thank you for confirming.