I discovered a few things that might be improved on, and some things that could be added.

I should mention that I write and speak in a very matter of fact kind of way, remember that this is constructive. If anything I say comes across as destructive or criticismic (I know it's not a word but it should be), just know that I mean no affence or anything negative. This map is really cool and I want to help make it better if I can.

- In the boss corridor 2 right after sponge guy eats you, a block is missing just above the door to the next corridor, so going into boss corridor 3. I assume there is meant to be a block there.

- Also there aren't any doors in the grandma corridors but perhaps that's intentional.

- In the target corridor 2 the next iron doors don't have blocks above them is there supposed to be white concrete there?

- The enigma corridor 4 has buttons to get arrows and a bow. If you press the arrow one it gives a bow as well, and the bow also gives arrows. Maybe you didn't know but you can put a command block behind a block which has a button on it, that way the command block isn't visible and when pressing each different button it won't power the other command block. So pressing for arrows will only give arrows and same for bows.

- In the flashing one you could put the redstone circuit beneath the lamps so that it's not on top if you want, it will still power them. but make sure that there is observers powering underneath each redstone lamp, have the redstone wires directly under the observers, so each time it flashes the observers read that signal and power the lamps. I don't know how well that made sense but if you're confused just DM me and I can help you.

- I assume in the shooting corridor you put the repeater intentionally so that the iron door stays open, which is fine. But if you wanted to make it a timing maneuver, I would just break that repeater and both redstone that are on the X axis.

- I like the star lab corridor mainly because of the brainstorming and building mini corridors, it would be cool to implement some variation of them into the main corridor. I like the quiz ones, answering how do craft certain items is really cool.
It may be a little difficult for the player to understand what is going on in this corridor, maybe add hints that lead them to finding out how to open the iron doors in the next corridor

- I enjoyed the challenge of the blocked corridor it's simple but clever.

- I was a little confused in the secrete passage corridor, I didn't find out how to progress. maybe make it easier or provide more clues. (I just switched to creative and broke the wall to get to the next corridor, but don't worry I put it right back to adventure)

- The story was a nice touch, I also liked how you had to go back to save the pig in order to continue.

Overall a very cool map, I really enjoyed it. The boss fights were well paced and extremely fun especially the last one, 9/10. I look forward to seeing more maps in the future keep it up the good work!

Also if you have any questions or ever want to do a collab, just DM me and we can set something up.

I had a little probleme sorry, now you can download it (I think) please tell me if it doesn't work.