Can anyone help me and tell me what I did wrong when isntalling some highlighters for Atom:IO?
It currently looks like this;

and does none of the highlighting it should.

Probably has a really easy solution but I don’t know how to make the highlights work.

Those are autocompletion and linter packages. For the highlighting part you will want something like “language-gmod-lua”

Which one is the best out there? Got a link?

There is only one. A simple google search would do the trick

i had exact same problem lol.