Actually, the foot shot has been around since H2. As for the shot through walls stuff, it's lag with BS connections. Easy fix, dedicated servers. Yes Bionix, we all know you have god host. Quit putting folks down and saying it's their fault.
This game could have been put together in less than a month. I guarantee the mapwork was and the templates for everything else was already in place. No excuses, I'm sick of hearing them.