Playing felt like a chore much of the 50 hours I spent on this game. Quests and characters were pretty bland and repetitive, enemies and locations were also pretty repetitive. The gun play is quite fun, would be better with a wider variety of enemies though.
I didn't really do much exploring, fast travelling in my ship and then walking for mins to get to a replica outpost to kill a bunch of enemies I'd killed multiple times before got boring quickly.
Also there wasn't really anything challenging in this game with the exception of space combat where I did die quite a lot of times. I had the game on hardest difficulty and I think I died once or twice in gunfights.