Here are the only tips I have for fighting Xigbar:
-When Xigbar tries to snipe you from his balcony, use this pattern to defend yourself:
a. just move around to avoid the inital shots.
b. when the cursor locks on you like he's gonna fire his big shot, stand still and face the camera.
c. after the camera starts to zoom out, wait approximately 1 full second, and use guard.
-Wisdom Form is your best friend. Final Form is great too, but you may or may not have it yet. Master & Valor dont provide the kind of distance and coverage you need to take on Xigbar.
-Keep an eye out for the "warp snipe" reaction command, just like when you fight Sniper Nobodies.
-Dont bother with Goofy's limit, it doesn't have the range you need here. Use Donald's limit when possible. It'll prove very useful.
-When Xigbar starts warping around you and firing smaller shots, try your best to face him and use guard. Not only will this protect you, but it will also damage and stun Xigbar.
-Remember to take advantage of the reload time on Xigbar's crossbows. Whenever Xigbar needs to reload, you'll hear him yell out "Reload!"
CONGRATULATIONS! If you're reading this post, then you've found one of the 4 hidden Nobodies in my contest. If this is your final Nobody sighting, please pm me the link to this page, and the links to the 3 other pages on which you spotted my hidden Nobodies.