I think for a teaser it's appropriately tense, it's shot well, and like skhellter said it has some solid sound design.
I have been wanting a period piece Predator film for ages, and Trachtenberg (who's work I really dug on 10 Cloverfield Lane) is definitely delivering on that here. It's early days and we have very little to go off of, of course, but I'd honestly be shocked if this doesn't wind up being better than Predators and The Predator.