These are very well done, but I feel like the scout's nose isn't like that. It has more of a bit of a ramp looking point to his nose.(I know someone kind of mentioned but I wanted to be specific what I mean)
you made his nose makes him look like ganondorf.
also you could always use a little more detail in your drawings, but how ever you draw is not my place to judge; although it would look nicer ;p.(referencing to minor stuff like the scouts shotgun, and perhaps the snipers cigarette.)
aside from that, referencing to the medic's facial expression "Not bad"