I think this game was a bit unclear from every side. The base concept is good. but the way you presented it made it a bit hard to understand and play. The lack of visual and audio cues didn't make me understand if I was playing correctly or not! Was I winning? Was I losing?
Maybe next time you could guide the player more towards your goal! Game testing with your friends would have prevented this! Consider it next time!
Also, wonderful pixel art! :D