Anomilly's Guide to ToD

Tips:
# Kill the Death Knights 1st ...they proc AMA
# Then kill rest of the hitters, and kill the spell casters last1
# Bring plenty of perfect roses. EB isn't going to work but maybe 30% of the time
The first floor contains three triggers that need to be activated to open the second floor. To unlock the second trigger, you must be seated.
SECOND FLOOR
Start by finding the lever northwest of the entrance, from here you must go north and then east. 
Head south for trigger number two, the next is back up to the north.
 Now a stool is what you seek, remain seated to keep the hole in the floor open.
 Next, you must find the mushroom, take a seat to unlock a door to the north.
 Once you have returned you must locate the chair, this will unlock the second door to the north. Ensure you find the north-eastern lever and the button south of it prior to heading to the second northern door.
 Behind the door far to the west is a chair, south and you should find a button that requires a couple of taps.
 North of here to the door, be cautious as the lever is last.
 Back to the first and you will find the final trigger that unlocks the third floor.
THIRD FLOOR
Floor number three will require a sacrifice from travelers, the results most often deadly. North of the chair you will find the first button.
 Be seated in the chair and quickly press the button, death is imminent.
 Now to the button at the south-western door, a second sacrifice may be required here. The fourth floor awaits you.
FOURTH FLOOR
Locate the set of mushrooms, there is one for each the button and southern lever. The northern lever is sticky often requiring a second attempt. 
Be cautious as you enter the sealed passage, you will likely find the squad commander in these depths.