Bloodstained has some secrets. They’re not miserable, but there is a pile of them.
In addition to cheat codes and some crafting chicanery, here’s how to find a few of the most important endgame boss fights.
[Heavy spoilers for endgame content below, mostly location-based, no boss photos.]
Source: Destructoid Bloodstained guide: here’s how you find several big endgame boss fights