Star Wars : the Explorer (fan concept) - Sentinel troopers

Star Wars : the Explorer is set during the Imperial period, about 5 to 8 years after the end of the Clone Wars.
The hero: an explorer/archaeologist is contacted by a patron about a recently unearthed legend about the existence of a Force relic dating from before the Jedi/Sith split allowing the opening of a temple giving access to all possible knowledge about the Force.
He must therefore travel the galaxy to track the legend and the relic. But he is hot on his heels by a secret faction of the Empire responsible for bringing together Sith relics and, more broadly, artifacts that could give even more power to the Emperor...
I wanted to work just as I would for a real game project.
These troops are specialized in keeping safe some areas or artifacts until they are extracted from their location by the Empire. They are elite snipers.