Unzip this and put it into a folder
then open it in loenn.
by the way, remember to keep note of all answers!

and to be clear, NOTHING is off limits 
(apart from changing the map without permission thats just cheating)

Things that would probably benefit you:
blender 
an image editing software of your choice
a hex editor (preferably HxD)
a notepad (digital or physical)
a c# decompiler [oh stars]
FMOD bank decompiler [what]
