A boss door answers to the id the game publishes and to its slug, and a name is
slugged before it is tried, so /bosses/oberon and /bosses/Grand Master Oberon
are the same door. The id wins where the two collide.

Both handles earn their place on this track: the two are the same string on one
of the three rows — jaul — and differ on the other two, where the name carries
a title the key drops (oberon for Grand Master Oberon) or the key runs two
words together (scarlettEtzel for scarlett-etzel).

door.kills.monsters is door.kills.creatures now, which is a breaking change on
this endpoint. Nothing else moved: the same list in the same order, and every
field inside it spelled as it was.