An existential showdown!
The best elements of AVP are its strong cast and its gorgeous set design. H.R. Giger provided outstanding artwork for the Alien franchise, and the ones featured in Predator 2, for instance, were not far from the hybrid we get here. The war between Alien and Predator takes place inside an underground pyramid that behaves like a self-solving 3D-Puzzle.
Freddy vs. Jason came out a year prior and was more into the “versus” aspect than character exposition. Both match-up spin-offs were born from rumors and fan fiction in the 80’s, and took this long to come out. AVP can be a letdown for viewers with high expectations. It is the script that brings the movie down, sadly. Character arcs are limited by their uselessness as humans in the plot.
The creatures look great, and so does the production as a whole. The two franchises are treated with respect. The writers grasped the occasion to spend time discovering their villain and it pays off. The third act is weak and glorifies a human that simply doesn't deserve our gratification. The two villains aren't exactly vocal, so the conclusion is somewhat abrupt but reminiscent of slashers.