You have to show the FPS counter of the game, anything else is up to you.

When playing any% unrestricted you can unlock anything you want. Gameplay modifiers, cheats, everything the game offers you. Yes that also includes stuff like invisibility. That is the point of the unrestricted category basically.

Yes it will be valid. In fact, you have to use the ingame speedrun mode in order for the run to be valid. Any other timer is optional.

For easy category on PC you'd have to run Any%. You can choose between restricted and unrestricted any%

Restricted = No gameplay modifiers like one shot death for example, no combat accessibilities, no skip puzzle or infinite breath, no high contrast etc

Unrestricted = Everything is allowed as long as they are options within the game

Eyvallah Arda. Hayır onların algıları yükselmiyor. Onun için kendi bi ayarı var (ingilizcesi = stealth). Aimleri daha iyi oluyor ve daha agresif hareket ediyorlar ama kötü algılarından dolayı pek birşey değişmiyor. Sen o ayarı en zora değiştir, her şeyi da kolay ve daha çabuk yaparsın ;)

Saying they are cheating is wrong because those "cheats" are modifiers within the game itself and when you do any% unrestricted runs you are allowed to use everything the game provides to you. So activating the one shot modifier or skipping all the puzzles is fine and is not considered cheating, since they are all options inside of the game that you can turn on or off.

Trainers or other things that give you god mode or whatever would be considered cheating, since they happen from outside the game.

If you don't like that, we also have a Any% restricted category where you are not allowed to use those things and complete the game that way.