To be fair it feels very rushed with a hole lot of things like story, quests, side quests , all the ocean planets , way too overpowered survival backpack . and all the contents that was cut out. there are actually no reason what so ever that we even have a air bar at all because we are never gonna use any other backpacks then the survival ones. and a air bar would have been a very useful mechanic if we would rather progress slowly downwards to the bottom of the ocean but with slowly upgrading a oxygen tank making us explore underwater island caves for parts to upgrade the air tanks timer and extending the games contents enormously. instead of just sinking down to the bottom in a instant wasting half a plant of space for every ocean planet and game contents.