Hey man, just wanted to say that I totally really appreciate that you assumed I knew that bug existed and fixed it already (I didn't know it even existed lol.) Actually, you were the only one to discover that. Thanks for the bug report! How embarrassing, though. But not as embarrassing as when the high score text on the title screen read "Harcdore" for the longest time and Firespike, who noticed the typo last year when I first made the title screen, chose to wait until near the deadline to see if I would notice (I didn't) because he thought it was funny (it was. BUT STILL!!! That font was pixel art. I manually and very slowly made that typo.)
As for your second bug, it's not a 'bug' in the traditional sense. I was aware of this one. It's impossible to do on the intended controls (game-pad/controller) because you cannot shoot left and right simultaneously on a stick, but you can on a keyboard. Depending on the results of this contest, I may leave the keyboard controls in the final game build. Specifically for players who don't own game-pads. However the game isn't built around the keyboard controls. I was able to beat stages with them, but it's awkward. The game-pad is far superior for the experience. I guess to fix this second bug I would simply put in a check to make sure the opposite direction isn't being held down on each side. At least in my head it seems like a simple fix. I'll do that soon here.
About the controls. I've left in a couple of things for players to discover if they get creative and are observant. I don't want to say what they are, but I will say that whether or not you discover them you will get better at the game over time. This was an intentional decision on my part, I wanted the experience to be this way. The 'twist' with the controls isn't some very sophisticated/complex feature, but it requires the player to get used to the game on its terms. You have to meet it halfway in that sense. And as a result, the experience will stick with you more. When I tested Coma State Eden, I almost always tested on Hardcore mode because I needed to know that the game content could be beaten at its most challenging iteration.
Edit:
Both bugs are fixed!
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I think that if you have any intention of selling this on PC, you should leave the keyboard support in, as while I mostly played it with my DualShock 4, not everyone owns a controller. Now that the keyboard-specific bug is fixed, I can't see any reason to remove it, haha.
Anyways, thanks for taking the time to respond to my feedback!