Sometimes there are big droughts of boss fights.
Not every item is gained as a result of a boss fight. This game does have a lot of bosses, but more than half of the abilities are just lying around someplace for you to pick them up. Not that I dislike the puzzles! They’re actually some of my favorite parts. There’s just no reason for me to slow down the footage when I come across those.
This game has a way of making you dread the bosses even when you have a pretty good idea how to beat them. The reason Sheegoth is weak to morph ball bombs is that it is outright immune to all beam shots, including charged shots. Therefore, if you run out of missiles, you still need to have some way to damage it. That said, if you don’t know about the “stand close to prompt ice breath” (which opens up its missile weakness) strategy, morph ball bombs is also a more reliable way to damage the thing.