I like the idea behind this game, where it plays like a classic Zelda dungeon, but instead of collecting keys, you collect energy cells. I also like the way you implemented the objective text in the bottom left of the screen, as it gives you an idea of how far you are to completing the level. However, there are a few bugs that make the game kind of difficult to play. Firstly, if you stand directly under the moving bars, they can push you under the map and render the game unplayable. Secondly, there are gaps in the walls that you can get through, which will force the player out of bounds, once again rendering the game unplayable. This last one is more of a nitpick, but adding some kind of quit button to the game would make it better so the player doesn't need to either complete the game or Alt + F4 in order to quit. Overall, nice game, but the bugs take away some of the enjoyment for me.