Project Wolf Hunting has a similar sci-fi sub-plot and backstory like in The Witch Part 2. Both include gruesome and supernatural fights. They also both have the whole "human-experimentation" thing going on.
Much darker. Superpowers, regeneration, tagged 'monsters' some odd organisation behind things. Dark and gritty, crazy violence and some pretty dope fights. I preferred part 1 though. Moving is dark but not as dark as this one.
In both movies they have supernatural powers such as extreme force, wound immunity, etc...
The main leads were both manipulated by evil scientificists.