Thank you for your interest and for voting on Greenlight! I understand your concerns about the procedural-generated levels. When I set out to develop Cthon my goal was to try to create a shooter experience that felt at least a little different every time you played. Randomness is just as much a part of Cthon's DNA as its obvious references to Wolfenstein 3D, System Shock, Doom and countless others. A fixed-level mode could be interesting, but I unfortunately can't make any guarantees about whether it will ever make it into a release. If you ever reconsider, I do hope you enjoy it immensely.