After exploring the map and killing mobs on difficulty 2/3, My friend and I realized the gate didn't fall down. But I noticed if you walk up to it, the gate said "teleport" like it wasn't there. We teleported out, but after exploring and trying to finish the map through the exit door, I click it to leave and the music stopped but the ambient sound and everything was still going. Confused, my friend and I went back to the Crypt to see if there was something we missed but we cant check because the gate is still misting purple and up.