Thanks for playing.
You can use 'O' and 'P' to dash and attack respectively. I just didn't have time to add in options to switch the display but it is listed in the controls on the itch page. I plan to try to get controller support working and plan to tackle add it visually in the game then. I could add left click to attack as well then. The one swap that I think you asked for that I forgot about was to add 'E' as an interaction option.