'the Last of the Monks' - Hell no...

So if these Monks are engaging in a Holy War, against what forces do they have to stand? Of course, it will be Hell. Their Church was attacked by Demons, so now they want to break open the Gates of Hell to eradicate them once and for all.
Below you can see my concept of the Gates - I am not quite sure about the colour scheme (I think I need to go fo a cliche red to avoid weird questions about why Monks would break their own church...)



The architecture of Hell is based on an old project of mine, called Theta Sins. In there, Hell is based in a large city-like Cathedral which is built hanging upside down. This calls for a challenging architecture.



But who inhabit these evil walls? At first, I designed some Demons that were tough, evil brutes - but even though I loved their design, they did not scare me. I found them too bestial and cliche to inhabit Hell.



Thus, I started from scratch and approached the Demons from my personal view on fear. These were much more to my liking, and although I still need to adjust some small features, plus design different variations of Demons, I have decided that this sketch will be my starting point. Abandon all hope, ye who enter here...