Haven't fully diagnosed this but I think there are some issues with the music system, occasionally there will just be silence (in an actual biome, not the camps) and then the next music starts up when you reach another biome.
Also I had one of those black dashing/spinning guys end up in a camp once. Seems like the "dash" function doesn't check for the walls properly? (side note: maybe a glossary of all the enemies' names w/ pictures would help us communicate better on here?)