Action
This movie has an interesting story, but the action scenes really help you forget the B movie feel. It's fast paced with fresh fight scenes and lots of gun action.
Charlize Theron
She's the shit in this movie and looking great after 40. She must have trained a lot because her fighting and shooting look pro. I think as an actor it would be very difficult to play someone of an ancient age. How would someone hundreds or thousands of years old walk or talk?
What if?
Since it wasn't all CGI in your face, this movie seemed to draw me more into the characters and really gave me that "What if you were Wolverine?" feeling. The Old Gaurd is easy to find. It's on Netflix and is a popular download on The Pirate Bay.
Resources
https://www.rogerebert.com/reviews/the-old-guard-movie-review-2020