Big hint, in these areas, that everyone forgets. Its dark. Even with "Darkvision" you will have problems seeing things. Make sure you take a torch (Dip it into fire to light it, and you can leave it in inventory til needed).
Once you can see well enough to find all of the traps (Plates and Gargoyles) you have two choices, 3 if you make the roll to find the button that shuts off traps.
Disarm them, requires Disarm Trap kit, but if you screw up a roll you break the kit. You probably only have 1 or 2 of these at this point, so if you try, make sure to use "Guidance" to help your odds.
You can also "Block" everything. Put big crates over the gas traps, and vases in the path of fire of the darts.
