Rating issues
There is frequent sight of human corpses, some of which have been mutilated and dismembered, although the graphics are pixelated in nature and lacking in strong detail of injuries. Actual violence is mainly implied, although there are some non-realistic moments of violence, such as characters being hit on the head or eaten by monsters.
Strong language (‘fuck’) is used throughout, as well as milder terms including ‘shit’ and ‘piss’.
Other issues
There is also some sexual innuendo and sight of characters drinking and smoking.