Early on in Batman: Arkham Knight, the Riddler will reveal himself to be in the middle of a dastardly endeavor (as he is in every Batman Arkham game). This time, the Riddler has taken Catwoman hostage and he would like for Batman to come play a game in order to free her. Upon arrival, it is discovered that she has been fitted with an explosive collar, one that will need to be unlocked by finding a series of keys to count down her 9 lives (Riddler is so clever). Of course, in order to obtain these keys you will have to complete a serious of difficult challenges: both with Catwoman, and alone.
Out of these missions and challenges, four of them are rooms that will open up after meeting certain requirements within Riddler’s Most Wanted questline. The last of these rooms is called Final Exam, a room that really sets out to kill you. Luckily this room is far from the most difficult once you know what to do, and it will finally get that damn collar off of Catwoman’s neck so let’s get to it. One thing to note is that you cannot enter the room until you’ve obtained the Remote Electrical Charge which you’ll have to obtain in a later part of the main story. Once you have that you’re ready to rock.