I like the basic idea of this game, which is great! I'm not sure if it's intensional but i tended to trigger the E key while moving around. This feels like exploiting the game and also kind of annoying, so I punished kind of myself. But otherwise the progression feels kind of slow. I think the game could benefit from some kind of "hint" system or mechanic to find the right path without brute-force :D
However, i had fun playing it! So, well done :)