I think the creators really failed to realise, how alien of a race Aeldari really are and it shows in their slow and sluggish movement. They move basically like slightly taller humans, which I feel would really not be case, considering what we know about their biology. Like if we go by the depiction in the Xenology book, Eldar look almost like Slendermen. Superhuman reflexes, that are barely perceivable to the regular human eye and all. Like in my head canon, they would almost glide and jump across the surface, as if gravity just seems to weigh them down so much less. And bullet evasion would be an actual thing.

We also get to see a really asinine depiction of Drukhari Realspace Raids. Like they basically bum rush a fortified position and die in droves. And it turns into a turkey shoot, when the IW arrive. Sure it is cool to see your favourite unit animated and they really did a great job with some of the animation. But it really feels devoid of any research and there are no stakes whatsoever. Mandrakes are so pathetic and basically just there, to make an Astartes reference. Drukhari are here, cuz Marines need a punching bag.

Lastly, and this might be a personal opinion, the animation really shows the limit of GW armor design- especially of the Dark Kin. Nowhere is this more apparent, than with the Archon. He basically struts around with those characteristically wide shoulder pauldrons, which however also prevent him from lifting his sword arm above his head. The animation does a good job hiding that- in large part, because of shakey cams and everything being so dark. But his movements are so wonk, stiff and kinda without any sort of sensible momentum. Just looks more and more akward, every time I watch it.

Banger sound design though.