All the details are here (and feedback can be done directly on the web site - all responses are anonymous): http://www.zuluonezero.net/endless-elevator-beta/

Play as the LawMan. A deadly spy working to save top secret plans from the bad guys. You are stuck in the Worlds Tallest Building in the villains' secret oasis and the bad guys are literally everywhere! Your job is to find the secret messages hidden in the building and to climb as high as you can.

This is a voxel style rework of an arcade classic into a relaxed endless shoot-em up with a unique 2.5D floor climbing vertical play space with a timeless spy themed soundtrack.