In most stealth games I played, I either snuck everywhere or didn't bother sneaking at all. In this one though, I found myself switching between run, walk, and sneak quite often! My biggest complaint would be the control scheme, since the number keys use the same hand as the one for movement and that made it hard to pull out abilities in a tough spot.
It also wasn't very clear where to go to find the memories. This normally wouldn't be a big deal, but in a game like this where you sacrifice movement speed for tangible benefit, knowing I could be wasting time going in a wrong direction was that much more frustrating.
Overall, I found it very fun despite the difficulty (I only managed to make it up to three memories, and that was after several tries), since most deaths felt like I could've avoided them if I'd played better. Solid game, only bug I found was talking to turtle before finding the first memory crashes the game.