I decided that the Oryx sprite pack probably wasn't going to be very viable commercially, due to the massive saturation of use. So I tried my hand at crafting my own characters. Still a lot of work to make new sprites for everything but I think the characters and monsters are the more important things to change. I added some new tile graphics to try and create a 3/4 perspective look to more or less match the character. I am fairly happy with this for the first revision.

Trying out the SpriteLightKit plugin, almost what I want.

Added some torches!

Gave up on my own engine and started to use Unity3d.

Clearly this is not right!