I can definitely add controller support and there is a part on the next floor where there are false walls. The door you were stuck on opens when you get a key for becoming a D level Lister, I forgot to mention that. The button you hit should have opened a path as well to give you an old spear in an old chest. I'm not sure why it didn't. Thanks for telling me about a Beta test Discord as well, I'll need to look into that.