Quite too easy to solve. I liked your last puzzle part , with turrets .I just completed in 2 minutes 25 seconds. There is too many shortcuts to make your way to exit.

I can see what you're going for in here and it's got some ok ideas for a second chamber, I particularly liked the way you set up the first room. However, there needs to be a fizzler between the second and third room to prevent the player from carrying the cube with them or portalling the cube through (I did, there's no reason other players won't) and the last room can be mostly skipped just by placing the laser cube on the pressure button and leaving, the turret doesn't activate fast enough to shoot the player.

I've got a little collection of chambers going and I'm always interested in feedback on each chamber or the collection as a whole. I'd be grateful if you'd have a look:
Elementary