It is also possible to play a demo under developer mode, which lets you see squares of the enemy, makes it easier to spot hackers in a demo.
Anyways, I havnt played very much on IceOps servers, but I know a lot about cheaters and their "style" and way to respond on. The way Animal are responding on, in any way I seen, is just signs of being immature, and we also know, most cheaters are immature and acts the way that he does. I cant really say I see much hacks in that video. But that doesnt mean he isnt hacking at all. Just by how I see his reactions, I would actually believe he does. I saw the report of animal, made by another guy here, when I saw the replies of animal I was almost amazed. Its totally just signs of an immature kid.
Just sayin'