I would say a little more repetitive than Horizon. The structure is very similar, but there are really only four or so types of enemies and they’re all human, so you lose a lot of the variety that comes with fighting the machines.
That said, I still enjoyed it. Even though it gets a bit stale in the mid to late game, the gameplay is solid, and the story is good enough that I didn’t mind too much.
I had the same issue at first, but once I learned that the game actually expects you to spend some time in the training ring with Bernard to both level up Henry’s fighting and build your own skills, it got a lot better. The game will let you do one round of training and move on, but you should do quite a few to level up, and you should revisit the training ring periodically as you level more to learn new techniques.