Its absolutely top quality, true boomer shooter with awesome retro graphics. the demo is horde mode, has 3 maps and seems like the arsenal is extensive (you unlock more weapons automatically as you survive the waves)\
seems to be a an amalgamation of everything good from a range of shooters but most heavily quake I guess.
how the heck this is avaialbel since 24 november and it wasnt posted here yet is completely beyond me.
Yes, swimclubdunk is a solid dev that should be supported. Check out his portfolio lots of cool shots of CD and other games he's worked on.
looks amazing from the screenshots!