Trying to attain a certain look - no antialiasing on textures?

Hi all, I recently played a Doom mod I really liked the look of and want to recreate it in Unity. Here's a screenshot:



I understand that I have to disable the lighting engine first -- the "unlit" shader seems to be the closest I can get to this. However, I'd like to know if there's a way to make textures not get blurry when they're stretched across a plane. In this mod, the colors are all hard and defined like they are in the original image file, until they're at a severe enough angles where certain colors have to be "combined."

Is there any way to achieve an effect like this in Unity? I tried setting textures to point filter instead of bilinear, and while that was a step in the right direction it's still not close enough to the desired effect. If anyone could point me in the right direction I would be very grateful! It's not urgent though, I'm just doing this for fun.

 

Select your texture and change the Filter Mode from Bilinear to Point.