I've been watching this game and missed it when it dipped just below $15 previously, so I picked it up before it goes back up again.
The one review mentioned the developer keeps patching the game, and apparently couch co-op is in the works.
Titan Quest: Standard Edition - Xbox One https://www.amazon.com/dp/B0785P5...5AbQTV7EYH
Below is the Amazon review I was referring to.
As of 3/29/18 two patches have been released which has fixed most of the issues. THERE ARE NO DEAL BREAKING ISSUES - I did the Medusa quest pre patch all I did was move until it targeted the one I needed. Do not miss this game if you are a Diablo 2 fan! Update information can be found on Reddit via user TitanQuestAE. They are taking this seriously, and continue to patch."