Cthulhu: The Cosmic Abyss

Cthulhu: The Cosmic Abyss stops you with doors and passages rather than with combat. Most of what people search for is one specific obstacle in one specific chapter, so coverage here is organised the same way: one guide per blockage.

Common questions

How do I open the forge door in Chapter 5?

It needs a specific sequence rather than an item, and there is a dedicated guide for it. Most of the game's blockages work the same way.