Strange problem in Blender regarding funky normals(?)

[Psycommu]

So, in short, I'm trying to fix this problem for a friend who uses Blender and only Blender because he can't really afford paid software. He's been ripping models from Warframe with ninjaripper, but due to the fact that Blender can't run the script file to import the .rip files it puts out, he has to use Noesis with a python script plugin to get them to be able to be imported instead. However the problem here is that something somewhere down the line [I]really[/I] fucks up something. I'm not even really sure if it's normals. When smoothed, shading in the viewfinder is... Hard to explain. It's as if the shading is on a very careful balance between existing and not existing.

[vid]http://i.imgur.com/n0PkAa3.mp4[/vid]

In comparison, this is what it [I]should[/I] look like, fixed by me by just simply running it through 3ds Max. Note by "running it through 3ds Max" I mean just importing the problem model and then exporting it without touching a damn thing.

[vid]http://i.imgur.com/LVpPrCt.mp4[/vid]

Huge difference. Now, when I turn off smoothing on the "broken" one, it gets even worse.

[img]http://i.imgur.com/rEIZIZK.png[/img]
What the fuck is this.

Actually using it in any game results in much of the same. Example of such (backfaces visible on purpose, does it without them visible too) :
[vid]http://i.imgur.com/91CPdmp.mp4[/vid]

More examples:
[t]http://i.imgur.com/HueyYnb.png[/t] [t]http://i.imgur.com/cVn88RJ.png[/t]

I've tried a lot to attempt to fix it, recalculating normals and removing doubles and all that jazz, but I'm not very proficient with Blender, and I'd like to help my friend so he doesn't have to ask me or anyone else with a paid modeling program to help anymore. He really hates having to ask.

I'm aware this might be an issue with how the python script opens the files or how Noesis exports things in general, but that's definitely beyond my scope of troubleshooting.

Thanks in advance for any help.

[editline]19th February 2017[/editline]

Haha, I'm an idiot. After a bit of googling I found this, which works just fine if you switch vertex layout from "auto" to "manual" and don't touch anything while importing.

[url]https://github.com/Dummiesman/RipImport[/url]

I won't snip the thread, I'm going to leave this all here just in case anyone else has any problems like this.

[editline]19th February 2017[/editline]

Never mind. Unfixed. This plugin destroys the texture maps completely. God dammit. It's the only one that even works as well as it does. The other Blender plugins I've found for this either don't work or explicitly state that UV importing isn't implemented. Arghh.