Here's a list of the problems/bugs I met :
-Items looted just stopped being in my inventory after the 2nd mission (maybe because of a crash that happened just after validation). I also noticed that the merchant wasn't selling anything once it happened. And restarting the game didn't solve anything.
-I could add the fact that missions are really long (the purge mission is a pain in the ass when you have to backtrack, it gets worse because :
-You can't open the map to see where you didn't explored yet
-A lot of never ending loading times (let's call this a crash)
-There's no way to compare 2 items easilly
-Why the green is uncommon while green is rare? It goes against decades of video gaming...