It's been almost 2 years since i played that mod so this is what i recall by looking at my maps.
MostlyHarmless wrote:1. The very north-west area of the Maze - I can see a special shield (Maze Shield?) and a crystal flower there, but an open pit is preventing my access.
IIRC before that pit is a switch/lever blocked by a teleporter which can be deactivated below.
MostlyHarmless wrote:2. In the Frozen Lair, at the northern part, I can hear Ice Slimes behind the back wall of the main (largest) area where the crossings appear and disappear, but cannot find a way past that wall.
Look for hidden buttons on the walls.
MostlyHarmless wrote:3. In the air elemental dungeon, I can see Air Slimes in an area with a breast plate on an alter (Maze armor I presume), but cannot find a way in.
You mean that barred-off area near Nauj's room? Jump in from above.
MostlyHarmless wrote:4. I'm missing the pants and gloves from the Wizard armor set - where can I find those?
Sorry, can't recall that.
MostlyHarmless wrote:5. Also, I take it there is no Rogue Armor - at least I haven't found any.
It's got upgraded to a 5 piece set called Archer armor.