Because those are exlusive to the Outlast universe. This is just a game mechanic. Hell, might as well add "Hiding" as a page (hope I didn't give you any ideas). Also, I suggest that you start adding all the images from Models to their respective page's gallery, as that will be getting deleted as well.
You're not the only admin here and you can't decide on your own. For one thing, I was gonna remove the models page as well, but even though it's a game mechanic, it features some stuff, I don't see the reason for it to be removed. I've seen plenty of wikia's feature the games mechanics on the wiki. Why is it necessary for the game featured icons to be removed?
I know that I'm not the only admin here who can't decide on my own, but these articles are not needed whatsoever. Also, Models should be deleted because all it does is showcase images, which can be simply added to their respective articles. And once again, we are our own wiki, and we don't need to be copying everyone else (from which I can only tell is coming from the Call of Duty Wiki). Also, it's necessary to remove the game icons because there is ONE game, not 20. Every article relates to only one game; and from what I can tell, one game for the rest of the time this wiki is in existence, as there will probably be only one Outlast game.
You somewhat seem like your threatening me or something. I did that before discussing it with you. Though that feature wasn't brought here by me. The reason I locked those 3 pages is because too many people edit it and either remove a lot of valuable stuff or add some unneeded ones.
I'm not threatening you whatsoever, but before I've made a reasonable mass change, you should've contacted me about my edits before you started to revert them; as you've just caused a massive "edit war" on the wiki. Also, what pages are you talking about?
Yes, the real-life icon should be removed too. Also, I suggest that you change the protection to "Block new and unregistered users" so newer users can't make absurd edits. Just as a note as well, the Lockdown template isn't needed for articles that are locked; we can go without it (including the category).
You've mentioned the locking of those three pages: I suggest that you change the lock setting to that setting. For the page of the OST, I suggest to make a table containing all those details. We could as well create separate pages for the tracks.