@maxylobes, @AnEternalEnigma, @Ravenhart, @Bawkbasoup, and @Punchy are all horror speedrunners that I'd recommend checking out and seeing if any of the games they run are what you're looking for. They've all got social media presences and Twitter is an easy place to reach most of them. You can find that info on their Twitch pages. You can also check out Painticus on YouTube (he streams on Twitch, but not often) as he reviews and dissects horror games and most of what he covers are very short experiences. He's not a speedrunner, though.

Check out each of those runner's times here and you can get a feel for how long the runs will be once you get proficient. The first 3 Silent Hill games are all within the 45 minute time that you're looking for.

I'll give a tl;dr on my thoughts:

A "No Sound" speedrun would be stupidly boring to watch. I wouldn't. I know I'm not alone on that. If "No Sound" is allowed to just be merged into the existing speedruns or if the old runs are archived and a new leaderboard made, it's just going to force people to run "No Sound" or quit competing. That's pretty shitty. Either way it will really wreak havoc on people who stream on Twitch for a living and who play D2 as a large portion of their content.

Addendum: The more I think about it, the more I realize that things like -ns and forcing people to have to reroll maps endlessly just to find the lucky RNG with a jail farming WP (or forcing people to play only on a specific seed which just takes away the soul of what D2 is) is just anti-fun at this point. You're taking away anything fun about running this game in a competitive category just for the sake of a few more minutes off of the timer in a way that feels artificial and sterile. I've read over this thread. Ryu's ideas seem to make the most sense to me.

Thank you for making a site redesign that isn't total butt like YouTube is fond of doing and like Reddit is in the process of doing as we speak.

Getting used to the textures you should be seeing and remembering things like "go forward until I see grates on the wall"

That actually might help and isn't something I thought of.

Yea, I've been into speedrunning for probably 5 years, but never ran anything myself. Just did a lot of watching. Decided to give it a try and since the Genesis is my favorite system of all time I went through the list of games to narrow it down to something to run. This was one of my fav games as a kid and even today it's immensely playable casually. I looked it up to see only one run on record and figured I'd try adding my name to the list.

I'm having significant problems memorizing the movements in dungeons. I get to the Beastman Caves for the second time and I can get to the Swamp exit pretty easily because I just base it on encounters (after fighting x then do movements y), but on the way out it's mostly empty and I get completely lost. Been at it for several days with absolutely no progress towards memorizing this. I can't even imagine trying with the Azcan Temple...

Any tips on memorizing?