Here's gameplay of an EXTREMELY early build, keep that in mind before you criticize.
However I'm proud to announce that I've added urination, an SMG, water, working walls, and basic AI.
http://www.youtube.com/watch?v=ER9DF_T1xBMThis footage was probably around Revision 10-30, now I'm currently at Revision 110, alot of stuff has been added, like ambient sound and gunfire sounds.
I made a system where main menu music is randomized, and the splash button text is randomized aswell.
Things are subject to change in the future.
EDIT/UPDATE: It's running on the same engine that was used to make Hotline Miami
<3 (YoyoGame's Game Maker)