Clicking doesn't work for some reason. Turns out you have to press Enter to attack.
Viewing post in Sheris ROOM: Gamejam page jam comments
Thanks. At first I was still getting no response but then I discovered you also have to be moving to attack. To sketsbereal I think you should write a new controls list because the ones available seem to be outdated and I think the low number of ratings on this game are because not very many people can figure it out themselves.