Fair enough. There were a lot of weapons and variations of the weapons and I'd agree that some things weren't explained well or at all. But for me part of the fun was experimenting and figuring out what worked and what didn't.

As for the story, it really didn't click for me either until later in the game when the how and why of that world became clearer. Prior to that it felt like just another derivative (post-post-)post-apocalyptic story. But from that point on I was fully invested, which made the ending all the more impactful for me.