Hurray more animations for me to critique!
Assault rifle: I really like the origin, though I think the model probably would have looked better unmodified. The melee animation looks cool, but it doesn't really look like its hitting anything, just sort of raising the weapon. The reload looks very bad. It shows that the right hand's fingers are not well wrapped around the gun. Also, the movements are jerky and unrealistic. The gun doesn't move properly when the clip is removed or inserted, and the left hand looks messy when its pushing the bolt. What I did like was the grenade throw, that looked good and it has always been one of my personal weakpoints. I wish I had gotten a good look at the ready anim but it wasn't really visible. The firing animation looked good, but it looks like you still don't constrain very well. The left hand seems to stray from the gun a bit. I might be wrong about that though.

Brute shot: The ready animation looked cool and accurate to halo 3, but the origin in its self looked clippy (the thumb). The melee looked pretty lame. There was a serious lack of implied force, just like the assault rifle. The fire looked good, I have no complaints on that, but the reload was very unappealing. There was far to much visible arm, and the left hand twisted in ways that it shouldn't have. Also, the fingers quite clearly clipped while putting the grenades in. The grenade throw and the equipment deploy both looked good to me though.