There were heavies in the video....taken down by a light probably....from a high vantage point....like I've been saying....
im pretty sure he was a medium because he was running a little faster than the heavy was in the dev diaries. he also had an assault rifle. they just boosted SMART for entertainment purposes
I didn't notice any XP notifiers when he was shooting guys. Perhaps it's an option?
its right on the bottom of the sight it was a yellow ticker that was building up it went from like 4 to 14 and once he stopped shooting it dissapeared - Z