I've been playing the first in the series on normal difficulty and TBH it's an absolute stroll. I've only been playing for a few hours and already at 60%. I was talking to someone who has played them on PS3 and PS4 and they hate the PS4 version. They say that most of the puzzles have been removed and it plays differently. TBH I'm a bit underwhelmed having never played them on PS3 despite all the hype. Have a lot of the puzzle elements been removed from the new version or do you just have to up the difficulty to get them included?