And I wish Amid Evil had an option to enable texture filtering, including anisotropic filtering; it would look kickass. The PBR lighting without filtering generates a lot of random white spots that makes the visuals more noisy than actual 90s FPSs.

I don't miss shotguns in it, though. The blue homing projectiles fits the role of wide spread shots, and the green crystals fits the role of quick concentrated damage. 

visuals more noisy than actual 90s FPSs

I found that the game, by default, had an unacceptably bad shimmering pixel noise problem in the distance until I set "AA Method: Temporal" in the graphics options. That totally smoothed out the middle to far distance. 

Temporal AA seems to have reduced the grainyness, although I haven't tested it in the grainiest areas yet. Thanks Kinn.

I never liked AA due to the artifacts it introduces, but in Doom 2016 I noticed some places had extremely heavy grainy artifacts if AA was not used. Looks like modern games are designed with AA in mind, so disabling it cripples the graphics. 

*TAA, not AA. 

Yeah, I did some good testing now and TAA does fix the noisy graphics in Amid Evil.

By the way, enabling Temporal Antialiasing resets the Resolution Scaling to 100%. If you enable TAA and then set the Resolution Scale slightly down to something like 97, the far away graphics will always look smoother, and anisotropic filtering becomes almost unnecessary.

It's a little sad that I've already played almost the whole game with extremely noisy graphics, though. I'm in the last episode, and could have enjoyed the game a lot more.