It's pretty similar to Godzilla or any other giant monster movie. It's a Kaiju flick. Like. LOTS of the same beats. Down to a 'standing in the hole which is revealed to be a footprint crane shot' lifted right out of the Roland emerich Godzilla. Ends with a sequel hook for another even.
Watch it. Don't watch the trailer, it gives away a fun moment. Just go in unprepared. It's more fun!
This movie was really enjoyable. Trollhunter had a very similar concept but treated it more as a MONSTER movie. More horror than this one, which was more of an adventure. I really would love if more films like these were made. Lots of fun monsters in European folklore!