I am really hoping the devs iterate on this in a future game. They already have a lot going right with this but god the level objective and boss variety is such a drawback for long-term replayability (such as clearing the Spire with every Weapon).

Even just one different objective type and an alternate final boss would've gone a long way.

At least they did something new and didn't just make another Splatformer with re-skinned Octarians again.