That's freaky yet 'cute' although it shouldn't be. Maybe that's just the model. Looks pretty good though.
Maybe the lack of proper background and lighting? He's on a white background; maybe if he was advancing over the ruined remains of your teammates and base....
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Nice animation Gavlig and good idea too. Only problem I see is the elbow of the little arm snapping/popping when he first reaches up. This could be due to his shuffling on the spot tho.
Looks great, he looked like he was screaming alright, but yeah the animation of the attack was a little tad-bit unrealistic, Unvanquished is defly modernized and active version of Trem