I can't figure out how to get into the Tower in Arnika. I've read people getting in through the portal in the King's Apartment in the Rapax Castle, but the only portal there led into the temple in Arnika.

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That's the queen's teleporter. The King's Chamber (Apartment?) key opens a really tiny keyhole in the King's rooms, this leads to the Tower teleporter.

Oh Jesus, I see the little bugger now. Unfortunately I decided to head over to the Rapax camp and proceeded to spank the King and his peons, making me hostile to the Rapax again. Ugh, I gotta wade through more Rapax dogs again. Big thanks on the tip, last time I got stuck on a Wizardry game I almost stuffed Snoopcheri up that crazy npc's arse.