I started a couple of gamemode projects but never finished any. I'm still a beginner with Lua but plan on improving. Keep in mind that at no point in this post am I asking anyone to make anything for me.
That said, I want to start a new project, this time similar in concept to modern-day stealth games, primarily Metal Gear Solid.
My first question is: has it been done before? I haven't seen anything like it since I've been a member here, but I haven't delved too far into past threads.
Second: Nothing about it seems particularly difficult, except for some specific features: grappling, stun (shorter KO) and sleep (tranquilizer, longer KO). I would use a variable for stamina, which non-lethal attacks would deplete. How difficult do you think it would be to allow players to grab and hold others stationary? Animations are not a priority right now, just the code. I'm thinking of using a sort of competitive mini-game in these situations, like the first player to enter a key combination wins the struggle. The attacker would be able to quickly choke out or throw, or the defender would break out of the hold.
I worked on a project like that, but then I stopped working on it. Unlike your project, it was based on Splinter Cell: Chaos Theory's Versus multiplayer.
Right now I'm re-making it from scratch, but I say - go for it, make your gamemode, because it's always good to have a variety of gamemodes.