In another question, I asked how to translate Acererak's message from the Tomb of Horrors in French, but since no one could answer that yet, someone suggested in the comments that I split the answer in two, asking what all the hints are first.
So here it is. What are all the hints hidden in Acererak's message ? (spoilers ahead)
Acererak congratulates you on your powers of observation, so make of this whatever you wish, for you will be mine in the end no matter what!
Go back to the tormentor or through the arch, and the second great hall you'll discover.
Shun green if you can, but night's good color is for those of great valor.
If shades of red stand for blood, the wise will not need sacrifice aught but a loop of magical metal- you're well along your march.
Two pits along the way will be found to lead to a fortuitous fall, so check the wall.
These keys and those are most important of all, and beware of trembling hands and what will maul.
If you find the false you find the true, and into the columned hall you'll come,and there the throne that's key and keyed.
The iron men of visage grim do more than meets the viewer's eye.
You 've left and left and found my tomb, and now your souls will die.
Please answer with pages/rooms references for each hint.