Recently I purchased Killing Floor from Steam. In the past, I had pirated the game (shame on me) to see if it was worth buying. Once deleted, I purchased and downloaded the Steam version. The Killing Floor splash image appears, and the application then crashed. I restarted my computer several times, same result. I searched "Killing Floor" to see if there were any remnants of the deleted game. There were tons of files. There's no file icon, nor file location for any file. Attached is a screenshot. Is there any way to delete these?