Thankyou for the postive feedback! The sequel is going to have around 2-3 hours of content plus upgradable guns so that should keep the interest going for longer.
The very extremely early version is on Greenlight concepts, but its not downloadable yet
http://cs2bus.com/sharedfiles/filedetails/?id=668118351
It is going to be 60FPS and full-HD and should be much better optimized :P

Great game but after I bought the ripper the frame drop was too real and made the game unplayable but a good 30 minutes invested into it!

It the game gets popular enough I will update to 60FPS (currently the game is 30FPS), fix all the issues and bugs, and possibly even make the game higher resolution!