This was a fun game, long, varied, with plenty of options to customize and get a unique gameplay experience each time. The engine is a bit buggy though, well maybe not buggy, but it could be improved. The way enemies so noticeably spawn when you enter a room, all in the same place too, that could be made better. Maybe have their locations mapped out instead of at random? The attacks are easy to avoid. If you have a weapon, don't engage in close combat, and just time your jumps with the fire rate of the enemies. Since they all gather in the same spot, they'll all be shooting from the same place. Often they also have the same weapons and shot frequency, so that's easy to figure out. Also, if you keep a direction key pressed when you exit the room, sometimes the character just stops in his tracks anyway. Also, some more detailed backgrounds would be nice.
Apart from all this it was, for what it was, a fun game! There's plenty of action; plenty of Madness. it's not as varied as it could be in scenery, but there's a lot of carnage to go through before the end of it. Hope you can refine this; maybe make a really awesome version of it later on... next year? Keep it going!
-cd-