2. The tent people, of course, are in Abdul;s Resort in Baal's Grder (Dragonsand).

3. The crystal of mana is in the locked chest in the treasure room of the Sewer System. If you enter the sewer from Castle Birka it is right there. The key to the treasure room soor can dbe found in one of the roud grates down there.

4. There is am Alchemist in what used to be Kriegspire Village who is available once you have all six urns. She will tell you what ingredients you need. Hint: Trader Joe in Abdul's Resort sells those ingredients.

5. Thw obelisk "treasure" is in a rock near the obelisk (and fountain of youth) in the Far Reaches (Hermit's Isle).

Don't know about Thomalina as I have nver had a problem with that quest so it is not a bug.

With the "clear the Witches quest", all you have to do is wait several hours in from of the quest giver's door and eventally she will recongnize that you have completed the quest.

And, yes, the Kochei quest is easy if you are prepared - level 70 or better and some really good weapons (the Ice weapons of the Gods and the Bow of Artemis will do nicely)