not bad
the hardest part is figuring out the fourth room. that code needs to be more visible. its nearly impossible to figure it out especially since it uses the pipes and the mograt on the right tocome up with a four number code.
everyone who is stuck and cant get that fourth room to light up (one to far right), go to the second room from the left and look at the pipes, it will make a 4 digit code. you use all the pipes and the column on the right.
still stuck, the code is 5151. from there it should be beatable