Have you already beaten the Fire room?
Or can you only get to the fire room by entering the ice room first?
I believe that one of those letters you find says something about blowing the gas from the gas room into the ice room by activating the air blower to high. When it is in there, then that helps defeat the ice things...I think...and then you can turn off the blower
Do you know what letters I am referring to?
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Devoted member of the
Ironworks
Loyal guardian of the
OHF
Member of the
Ancients' club