I like this game, I have no complaints. Mastering the levels is very fun.
I did want to mention though, I ended up abusing a lot of the crouch+roll movement, it's basically my way to move around the game at all times (even in the hub area), similar to the 'Zelda - Ocarina of Time' Link roll. It's very OP for stealthy playthroughs (might be intended of course, but for me at least it ended up being the optimal way to play the game).