Like the title says...

You mean a MUD? First day on the internet, OP?
While I'm sure you can make a very nice MUD, user, there are plenty other far older ones in existence you may want to take a look at.

It will also need a playable world, items, balanced combat, etc.
Programmers all want to use different languages.

Your game will be shit

I forgot to add that, sorry.

literally asking for it

Aren't those called MUDs?

Yeah, po-tay-to po-tah-to.

To give a more general intent of my outline though, I'm looking to make a unique game - permadeath, completely player driven sort of thing.

He who is afraid to enter the tiger's den will never catch it's cub.

More general outline of my intent*

As you can see, I'm very intelligent.

so you want people to connect via telnet or ssh?

You mean exactly like a MUD?