Blank Elevator is a hardcore puzzle map made to confuse everyone with not much information given .
Apparently you woke up in an elevator with no memory of how you got there.
Your main mission now is to turn on the power supply so that the elevator can move to the next floor. There is no power on the next floor so everything will be dark / grey-ish.
Client Version : 1.8.4
So now you need to explore and figure out how to break the puzzles. Every floor you have been to is the same but has different puzzles.