This game is amazing for being as small (storage capacity) as it is, and it runs really well. Not much more going for it IMO.
The design of the maps is essentially linear, but there are many things throughout the early game that you will have to go back to after you unlock the ability to use said areas, but by the time you unlock said abilities you usually have forgotten where the individual sections that require them are and it's not worth exploring the entire areas again just to find something (goo / alloy) that you can find everywhere, and it just felt like a major waste of time to go back and find them.
When you die you can go back and get everything you dropped making it feel like there's no reason to fear death.
The one thing I really loved about the game is the videos they made for it. There were some amazing videos in there! :D