The constant animation, the camera movement and the music really did convey the tense situation. When I first watch it, I kinda marveled at the level of animations you were able to put into it. Some from mixamo, but many weren't which was impressive. No comments on the blue faceless people because that's the style you were going for, and it looked completely fine.
Nitpicks: Some more sound effects would've been nice and the ending was a bit lack luster. Maybe some fog, some bloom and a darker environment would've suited it better.
Overall, nice one :)