Makes me think of a Assassin's creed cross-over with Mass effect kinda, minus the white color of the suits. Could be Assassin's Creed 10 or so when they get into the future, because it seems they are doing a whole timeline with the game series lol. From late medieval times to the 1800's (pirates), soon they will do a modern day AC and then future.
Amazing costume, it looks so great! Like it was a real suit or made by some pro movie costume designers, very well done! The pictures are great too, an outfit can look mediocre because of a bad photo but your photos are of just as high quality as your cosplay outfit. Everything looks very professional