EldarEldrad
Savant
If under beat you mean kill Werdna, then you can skip all medium levels (I mean those which available by elevator). Just level up to 10+ levels and go straight to bottom level and kill that SoB (check manual for powerful high level spells). You can explore later (or even kill Werdna again).Man I wish I could finally beat it. Any tips?
During chargen try to create as powerful chars as you can, reroll up to maximum bonus points. It will help you with advanced classes.
Keep two parties alive, in case you lost one, use another to recover their bodies.
Savescumming can make game ridicilously easy so use it with caution.