How wrong face normals in-game are usually noticeable:
This is more common, where the whole character or connected parts appears kind of see through.

Staff is missing from certain angles, rather uncommon to just have a few face normals wrong.

You can check face normals in Maya here:

Barely visible green dots (if visible at all)

Small green lines, very visible around “crowded” areas (face)

The fix is very simple :
Select your mesh, then, while in the modeling tab, go to Mesh Display > Reverse

Your model should now appear normal!