the game is amazing but its alot easier then the first one. The puzzles are no were near as hard. To me its as though they compensated some of the difficult things from portal one to accommodate the multiplatform players. The last "fight" was 10 times easier then the original portal 1 and it lacked some of the "shot a new portal open while flying threw another one feature. It also has this auto lock when falling into a portal where it automatically directs your path to the portal when falling. The Co-op parts looks promising though, im sure they will add on to that.