W...o...a...h!
The gameplay is insane! I cant believe how cool this is! I would of loved to see some tweaks... one item could of 'rooms' you can through out.. maybe enemies drop these or one item is available in each room. I was wanting a jump button to dodge incoming attacks as it got a little bit crazy. Performance was exceptional even after spamming the space button and then having to defend from the chaos! :D Also I would of very much enjoyed the firing to be auto while holding down the mouse button. Overall solid, fun and impressive!! I have no idea how you coded the rooms spawning and combing with current rooms on a grid but i loved it! :)