High Quality is available. Skip to 4:10 if you just want to view the ending. Final Battle and Ending for Arx Fatalis on the PC. I'm pretty sure it's the same for the Xbox version too. The final battle was actually not too hard for me this time around. This isn't the first time I've fought Iserbius/Akbaa can be ALOT tougher than this, especially if you're unprepared. There are credits for the game but I did not include them in this video. If you own the PC version you can just access the credits from the main menu at any time.
