Ritual is the easier of the two levels, and so I've managed to fit everything you need to know about it into a neat, little image.

Otherworld is considerably more complex, with interweaving level design, brand new enemies, & added gameplay mechanics. It is made up of three floors, as well as a large outdoor area & an isolated altar area. I have not included the outdoor area in this guide as it is extremely hard to map & ultimately serves no purpose. I have also not included the altar area as it is an open plane with a singular landmark in the centre.