I'm not sure if there is a bug or I'm just not figuring something out. I spent about five minutes trying to get out of the first room, trying everything I could think of. I am not sure the solution to the puzzle at all. Perhaps the other character you meet could give a bit of a hint?
Additionally, in browser the screen scales oddly and i had to scroll vertically and horizontally. It may be good to consider downsizing the games dimensions and upscaling for the window. This would work well with the 2d pixel art graphics as well.
I think the graphics are nice, very classic SNES and there is a sense of unity with the colors chosen. I love the sprite for the power generator! Sadly I could not figure out what to do with it, and lord will have to be waiting for their power a little while longer.