Logged around 12 hours on this game on Mac, completing the majority of levels up until the end of Rapture before encountering technical difficulties that make the game unplayable. If a fix is possible I intend to complete the game but for now it's shelved. I enjoyed what I did play for the most part, it's very clear that this is a platform that prides itself on pushing the player to the limits. The extreme difficulty makes it very rewarding when you succeed and there's enough of a skill ceiling that rewards mastering the techniques to improve times, collect bandages and unlock warp-zones. Occasionally however levels feel like they have a brute force approach difficulty where luck plays a significant role in success more than anything else. These particular levels become very tedious and are not rewarding to beat as you feel less like you accomplished something and more frustrated that it took so long. Overall this game has more well thought through levels than not, however I felt that the gameplay itself felt a little dragged out leading to later worlds becoming a chore. Glad I played it at least but I wasn't as blown away as I expected to be.