On paper this game is kewl. In practice it has several severe execution problems.
No key rebinding that I have been able to find. With that in mind, who decided the menu button was the right trigger? With no easy exit. Having the game and upgrade menu selection not be glowing or highlighted but faintly pulsating is... not a good choice. Great for those of you with perfect eye sight perhaps. I would not know. And... the upgrades I found don't seem to do much. I understand the theatrical motivation to make background and foreground objects in all black giving that shadowy feel. Buuuuuuut when you can't tell wall from incorporeal decoration it sort of fails,. I could go on. In short, if the game were not free I would get a refund. It's not glitchy so much as poor design choices make it difficult to play, Free means I can just delete. But since they are disallowing reviews this is the best I can do. I'm hoping the devs can use this feedback as there is no real point in warning potential buyers off at this price point.