Impressive for its Budget The world of Abigail is really interestingly put together. There's tons of practical and CGI sets and effects, and they all really look very good. The character design is fantastic, too.
They do something I don't think I've ever seen in a live-action film. They had actors who mostly don't speak English, at least not without an accent, do the whole performance in English, then they had English-speaking voice actors dub over them. As a result, the lip movements more or less sync up. It's a bit weird, though, because the phrasing sometimes sounds off and the words the original actors stress are the ones that would be stressed by a Russian speaker. The voice actors then had to match that to keep the lip movements synced up. It is very noticeable when they're shouting or excited. There's also this effect where some sentence seems like it would sound normal when written down, but then it sounds awkward when said aloud by the actor. Normally, the actors could just paraphrase, but in this movie, this is all still in there. Overall, I wouldn't say the result is great, but it's not so bad, and it really is a unique approach.
Otherwise, the story is about a revolution against an isolationist Fascist state. The parallels to Nazi Germany are obvious, both in the storytelling and many of the visuals. There's also an aspect of adventure, where you get to discover the world along with the characters, and an expansive world beyond what you see is hinted at, which is always nice. And, of course, in the vein of The Hunger Games and whatnot, it's young people driving the revolution. I wouldn't say anything mind-blowing or surprising happens, but it's a good fantasy tale.
All in all, it's a solid film. I would not have thought someone could put something like this together for 7 million USD.