Well, I finally broke down and used FerazaEdit to kill Xichra and complete the game. Even with 255 Ziridium seeds, I still ran out eventually (about 2/3 hit her) and had to use some fire seeds and smite rings to finish her off.
I'm very impressed with anyone that has beaten her without using the "secret" ledge and FerazEdit. Although 99 Ziridium seeds and 99 fire seeds sounds like a lot, it really isn't! There's very little room for missed shots.
Anyway, now looking back on the game as a whole, I thought I'd offer some (hopefully) constructive comments for Ben (and his next game ;-)).
1. Non-linear gameplay is excellent! I really liked being able to take levels in a non-linear fashion and come back to ones later.
2. Great use of backgrounds and music to set the mood and environment. Fantastic job by the artist and composer!
3. More spells/items! I was disappointed not to use the "mist potion" and some of the other goodies. Some puzzles that require non straight-forward use of items/spells could be fun.
4. A difficulty curve is important. The first couple FW levels are pretty easy, but then the player gets whapped with "Flash Freeze" and "Labyrinth." I found that to be a rather big and sudden jump in difficulty.
5. IMO, there are too many spots where split-second timing is crucial and the player is forced to do the same thing over and over again until he/she gets it. It is difficult to walk the line between "challenging" and "frustrating," but I came close to making my FW CD a frisbee quite a few times (especially through those hideous fire levels) and it seems a lot of other people did too. I'm probably just too stubborn to give up, but I can see people just deleting the game and putting the CD away when it gets too frustrating.
6. Keep an eye on the small stuff. Although not "show-stoppers," there were quite a few bugs in the game and some inconsistencies in the documentation. The little things add up and detract from the overall impression. Additionally, I found the lack of the boss in the ice levels obvious, and it made Iceconoclasm seem pointless.
7. The last level (Xichra's Lair) is too difficult.
Overall, though, a fun, challenging, and huge game. Well worth the money.
Thanks Ben and Ambrosia!
B