Not everything is 40k. That’s a Dark Trooper, a Droid meant to kill just about anything, naturally Kyle Katarn destroys them en masse because he’s got a higher kill count than the Death Star and punches krayt dragons to death

Little known fact, James Workshop invented the idea of bulky scifi armor. Every time somebody puts some in a movie or game, they’ve got to give James a cut. That’s why there wasn’t any power armor in the Starship Troopers movie- they just couldn’t afford paying for the rights.