It is not a bad game, but that does not mean it is a good game either.
First of all this game is nothing like the Witcher 3. It is a decent looter-shooter rpg game. Even after patch 1.5 there are still bugs, nothing game breaking but still annoying. The story and the story missions are good but most of the side quest/gigs are follow the same formula. 1. Eliminate a target, 2. Steal Data/item 3. Rescue someone that's all. Side quests are only good for the loot and exp. There are player choices, but very few really matter, the rest are just there.
Up until the middle of the game, I enjoyed the game. Afterwards it got repetitive and boring. A good game is like a good book, when you get to end you don't won't it be over. However, in this case I was overjoyed when I reached the end, because I could be done with it and move on to a better game.
If you have no other game to play and waiting for a new game, then play this game. If not and you have other games you want to try, then do not play this game.