Ugh. You improved on the last one at least, but this is still terrible. The most obvious problem is that the film is mostly gore, and this flash very much LACKS the complexity of art or fluidity of motion to make the gore itself enjoyable. This whole video is just a parade of annoying noises, gross-out imagery, and unnecessary crassness. Not that low-brow is inherently awful, but this video just lacks the resources to make it work.
The only character I enjoyed last time (the reconnaissance sniper) even managed to lose his originality and amusement. Hwurrrgh is not a fun sound to constantly listen to.
Not that your plot has any appeal, but in case you care; the fact that it didn't GO anywhere for this video is something of a problem.
The fact that you keep trying to force in suspense or lulls in the action just waste time; we always know that as soon as the awkwardness is over there will be more mediocre violence. Combined with the severely lacking art and dialogue, it feels a little like you're trying and failing to make someone else's movie.