Little stuck and more trapped areas

[adder1]

I found the masks already well 2 of them. I have already flipped them but the sysmbols you walk on dont see to have appeared . Have pressed the switch in the room at end of corridor and noticed the sound the floor makes have tried upheave 1,2 displace 1,2,3 on the floor to no avail. crossed the symbols to where the insignia of wind is but cant cross the symbols after that. I asume I need some thing extra have used the plume shield thats about as far as I have got maybe I am missing something or am bit addled. But will keep trying

Have the following

STAFFS of fire,earth,drain,exorcism,incantation.

SPELLS of unearth,upheave 1,2 displace 1,2,3

KEYS gold,steel,platinium,dreamers,copper

eye of horus
pitcher of eternity
illumante
magic seal
icaros plume
trismegistus(2).
Alchemist knowledge