Interesting to hear some of your design decision :)
Direction - I think that it's good to give the player clear information to make decision, but you could make some enemies dark, or have dark rooms to mix it up a bit if it gets too static.
Whating abilities - Yeah it's cool that you can't use some abilities for some time, it's just that you can't use any of the other abilities while recovering them which made me just wait around without doing anything. It's a fine balance, and I think the game would benefit to be slightly more interactive in that area.
GUI - I was actually slightly confuse about the position of buttons on the keyboard, one idea is to always have the control text visible (because it wasn't possible to do actions with it active?). I also think that the game could benefit of having different room shapes, which isn't possible in the same way by using the keyboard layout.
Good luck, feel free to tag me if you make a post jam version :)