I never tried 'nastylimbscheat' because it never works. Just look at the blood which is falling from above. Actually, I killed a fat man when the bridge was moving up and now the fat man is 'hovering'. I used my M4 and blood was 'raining'. This was my dirtiest moment.
Have you ever did something dirty? Post yours. In case if you all know how to activate the gore mode, please tell me.