Legacy
World 3
House of Ignorance
The trick to the House of Ignorance is marking a trail of where you have been, Hansel and Gretel style. So you know which way you have tried in a long corridor, drop two contrasting items next to each other (eg a potion bottle and a piece of jewellery). That way you'll know whether you've tried going both north from the potion bottle and south from the jewellery.
Make little maps and diagrams - it's tricky, but it will help. The problem is that all the wall look the same, so you won't always know if you've been moved or not. Or if you're at a new place or a previous place (unless you drop stuff). There are a couple of junctions with teleporters that look identical, so drop maybe a dagger before one of them, and a helmet before the other.
Overall this isn't hard, provided you keep track of where you have and haven't been. There is one secret button north of the main entrance, on the west wall, that leads to a couple of new areas. You will also recognise one or two areas by differently places vases/urns there, but urns are pretty scarce, so you need to make your own landmarks.
One time you must turn backward after teleporting in a passage - not just run and run forward through everything you see.