7:48 You can see the door, then shortly after I move left then right again it is gone. Not sure how this occurred however it probably had something to do with weapon attack effect sprites and me moving back and forth. That door is only supposed to open once that enemy is dead. Would be great if this led to being able to despawn boss doors.

This tas Geinuhayst & hellagels's DS Castlevania: Order of Ecclesia in 26:38.22 in the description has more detail and could explain about what is going on?

https://tasvideos.org/9417S

The doors in that area open automatically after a period of time in the room (I believe it's 60 seconds). You don't actually need to beat all enemies to proceed if you just wait it out.

*Normal enemy rooms only, doesn't apply to rooms with bosses

oh damn really? Well never mind then