If you buy this game, you're probably buying it for the gunplay and that's it. Before I start talking about the bad let me just say I had a blast with the combat in this game, and for that alone the game is worth it.
The story is ehh okay, I couldn't get into it and I there are no characters I got really attached to or even liked much. The game was a total disaster with bugs at first, some were just little tiny bugs that stuck out and caught my eye, while others were game breaking and almost ruined my experience (glitches, dramatic frame rate drops, and game crashing). After a few updates though, the game was turned around and had little issues after that. There a still some bugs here and there but nothing too bad.
I still enjoyed the game a lot, and I think it's worth it if you're looking for something to spend some time on while waiting for some other games to release.