If not I can't play the game with my controller because my hands can't grip an xbox controller where I use the arrows to move and the LB/RB to attack...

Not sure if it will work with this but you could try to remap the input with x360ce or something... 

check my thread:

https://itch.io/t/1902859/solved-gamepad-fix-remap-no-ps4-controller-support