So today i was talking to my friend on skype and was asking him how to download HLDJ.
As he was helping me he told me to go to Library>Tf2>right click>properties>launch options
Then when i was in launch options he told me to type " -console -novid -dxlevel 60 "
He said "console" was to launch the game with console and the other two would make the game look better and be less laggy.
Here is an image of a player before i typed these things in:

Here is an image of some players after i ran the game with these options:

Notice how the pyro in the second image isn't shiny but in the first image the pyro's boots and gloves and stuff were shiny?
Now all the shiny/glare stuff is gone and all the models have really bad lighting and no glare.
Someone told me that i need to set my graphics options back to default so i did and they still look like this.
I also removed all of the launch options i typed in earlyer.
If anyone could tell me why this is happening or how to fix it i would be greatful.