Like a good "Metroidvania", I've been looking for good "locks & keys" to guide the player though the world

So far I have

- "Doors" that require magic missiles that can be found (1 and 3 missiles)

- "Doors" that require a literal key to be found or from monster drop

- "Doors" that are higher up and require a double-jump that can be found

- "Doors" that require an X amount of souls (souls are dropped by monsters, the "soul" of the NPC)

And with "doors" I mean an obstacle, block or door 😉