[Question] Is this dll header obfuscated?

[Kuroyama]

So I unpack .unity3d using QuickBMS and I got an DLL (Which I can tell from some of the header bytes)
One thing I notice that the first two-bytes is changed to 45 52, so I changed it to 4D 5A just to make sure .NET Decompiler can detect it as .NET Assembly. But unfortunately, any .NET Decompiler is not working with this DLL (I've tried Reflector, dnSpy, ILspy). Here is screenshot of .NET Reflector:

Any tutorial to make decompilers working with this DLL?

 

[OdinDxD]

Moved to the right section