Use arrow keys or w,a,s,d keys to move. There are a few npc's that will move very specifcally. If you came this far you HAVE to follow! :D
I know this feels like an uncompleted game, but I just can't do more coding it's giving me a headache, but you could remix it and add more things to it :D. Btw look up for the original scroll game. It gets very glitchy if you go to the sides (in my game).